An acoustic wave device includes a substrate, a piezoelectric layer provided on the substrate, at least one pair of comb-shaped electrodes provided on the piezoelectric layer, the at least one pair of comb-shaped electrodes including a plurality of electrode fingers having an average pitch equal to or greater than 0.5 times a thickness of the piezoelectric layer, a first insulating layer provided between the substrate and the piezoelectric layer, the first insulating layer having an acoustic velocity of a bulk wave higher than an acoustic velocity of a bulk wave in the piezoelectric layer, and a second insulating layer provided between the first insulating layer and the piezoelectric layer, the second insulating layer having an acoustic velocity of a bulk wave higher than the acoustic velocity of the bulk wave in the first insulating layer.
A magnetic body is constituted by grains of a soft magnetic alloy bonded together via an oxide layer, wherein: the soft magnetic alloy is an alloy containing Si by 1 to 5.5 percent by mass, and Cr and/or Al by 0.2 to 4 percent by mass in total, as constituent elements, with Fe and unavoidable impurities accounting for the remainder, wherein a content of Si is more than a content of Cr and Al in total; and the oxide layer contains Si, as well as at least one of Fe, Cr, and Al, where, among Fe, Si, Cr, and Al, Si is contained in the largest quantity based on mass. The magnetic body can have high magnetic permeability.
H01F 1/147 - Alloys characterised by their composition
H01F 1/33 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metallic particles having oxide skin
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
This multilayer ceramic electronic component has: a plurality of dielectric layers 22a-22c; a plurality of internal electrode layers 23a, 23b, which are stacked so as to sandwich the dielectric layer; and a large dielectric particle 24, which is disposed in a discontinuous region 230 of any internal electrode layer of the plurality of internal electrode layers and which contacts an upper surface and a lower surface, considered in the stacking direction, of the internal electrode layer at an edge 231e, 232e of at least one of a first region 231 and a second region 232 of the internal electrode layer that are adjacent to each other across the interposed discontinuous region.
A ceramic electronic device includes a multilayer chip in which dielectric layers including ceramic as a main component and internal electrode layers including a first metal as a main component are alternately stacked, and the internal electrode layers is exposed alternately to portions of the multilayer chip, and external electrodes, each of which is provided on each of the portions of the multilayer chip. A dielectric pattern is provided in end margins where internal electrode layers connected to one of the external electrodes face each other with no internal electrode layer connected to the other of the external electrodes interposed therebetween. The internal electrode layers include one or more type of a second metal which is different from the first metal. A concentration of the second metal in the plurality of dielectric layers is higher than a concentration of the second metal of the dielectric pattern.
A multilayer ceramic capacitor according to one aspect of the present invention comprises: a ceramic body comprising a multilayered object having an approximately rectangular parallelepiped shape, which comprises a plurality of inner electrodes stacked with dielectric layers interposed therebetween and in which ends of the inner electrodes are led out to each of a pair of edge surfaces facing each other in parallel with the stacking direction, protection parts which are located on the stacking-direction upper and lower surfaces of the multilayered object, and side margin parts which are located on a pair of side surfaces orthogonal to the upper and lower surfaces of the multilayered object and to the edge surfaces thereof and which cover the edges of the inner electrodes that are exposed in the side surfaces; and an electrode structure comprising first base electrodes, which are disposed on the edge surfaces of the ceramic body and are electrically connected to the inner electrodes, base ceramic layers which are disposed on said edge surfaces of the ceramic body and are in contact with the periphery of the first base electrodes, and second base electrodes which cover both the first base electrodes and the base ceramic layers and are electrically connected to the first base electrodes.
This layered ceramic electronic component comprises: a layered body comprising a pair of principal surfaces that are orthogonal to a Z axis, a pair of end surfaces that are orthogonal to an X axis, and a pair of side surfaces that are orthogonal to a Y axis; a first margin part that is formed on one side of the layered body in a second axis direction; a second margin part that is formed on the other side of the layered body in the second axis direction; and a pair of external electrodes that are provided respectively to the pair of end surfaces. Each external electrode comprises an extension part that extends, in the first margin part, to a plane defined by a first axis direction and a third axis direction. A dimension in the first axis direction of at least the first margin part is set to be greater than a dimension in the first axis direction of the layered body.
A multilayer ceramic capacitor according to one aspect of the present invention is provided with: a ceramic element which comprises a generally cuboidal multilayer body that is obtained by alternately stacking a plurality of internal electrodes with a dielectric layer being interposed therebetween; a pair of external electrodes which are disposed on a lead-out surface, where the internal electrodes of the ceramic element are led out, while being connected to the internal electrodes; and a ceramic layer which is disposed on the lead-out surface so as to be in contact with the entire circumferences of the external electrodes when viewed from the lead-out surface side.
This method for manufacturing a multilayer ceramic electronic component 1 has: a step for forming a discontinuous internal electrode pattern 6 having breaks Dv on a dielectric green sheet using a vacuum film forming method; a step for laminating and crimping a plurality of dielectric green sheets so that the internal electrode patterns 6 overlap; a step for dividing the plurality of crimped dielectric green sheets into a plurality of laminates 2; and a step for calcining the laminates 2 so that a width Lv of the breaks Dv shrinks.
A ceramic electronic component including a multilayer structure comprising a plurality of dielectric layers alternating with a plurality of inner electrode layers, wherein at least any one of the inner electrode layers comprises a plurality of thin-film portions having a stacking-direction thickness of 0.5 μm or smaller and a thick-film portion formed between two adjacent thin-film portions and having a stacking-direction thickness which is at least twice that of the thin-film portion.
A waveguide device 100 comprises: a first member 10 that has a conductive surface 11; a second member 20 that has a conductive surface 21 facing the surface 11; a waveguide member 40 that is provided to extend in the planar direction of the surface 11 between the surface 11 and the surface 21, is in contact with the surface 11, forms a gap 42 with the surface 21, and has a conductive waveguide surface 41 facing the surface 21; a plurality of rods 30 that are provided around the waveguide member 40 between the surface 11 and the surface 21, are in contact with the surface 11, extend toward the surface 21, form a gap 31 with the surface 21, and each have a conductive surface; and a wall part 50 that is in contact with or is high-frequency coupled to the surface 11 and the surface 21 and provided adjacent to the waveguide member 40 without the plurality of rods 30 interposed therebetween between the surface 11 and the surface 21, wherein at least a side surface 51 facing the waveguide member 40 has conductivity.
A waveguide device 100 comprises: a first member 10 that has a conductive surface 11 and a through-hole 14 penetrating a space between the surface 11 and a surface 15 on the reverse side and having a conductive inner surface; a second member 20 that has a conductive surface 21 facing the surface 11; a waveguide member 40a that is provided to extend in a planar direction between the surfaces 11, 21, is in contact with the surface 11, forms a gap 42 with the surface 21, and has a leading end 45 adjacent to the through-hole 14 and a conductive waveguide surface 41 facing the surface 21; a plurality of rods 30 each having a conductive surface that are provided around the waveguide member 40a between the surfaces 11, 21, are in contact with the surface 11, form a gap 31 with the surface 21, and are not disposed between the through-hole 14 and the leading end 45 of the waveguide member 40a; and a wall part 50a that is in contact with or is high-frequency coupled to the surfaces 11, 21 and provided adjacent to the through-hole 14 without the rods 30 interposed therebetween between the surfaces 11, 21, and has conductive side surfaces.
This circuit board comprises a board, a first multilayered ceramic capacitor, and a second multilayered ceramic capacitor adjacent to the first multilayered ceramic capacitor. The dimension of the first multilayered ceramic capacitor in a first axial direction is more than or equal to 1.3 times the dimension thereof in a second axial direction orthogonal to the first axial. The dimension of the second multilayered ceramic capacitor in the first axial direction is more than or equal to 1.3 times the dimension thereof in the second axial direction orthogonal to the first axial. The interval between the first multilayered ceramic capacitor and the second multilayered ceramic capacitor is less than or equal to 1/2 the dimension of the first multilayered ceramic capacitor in the second axial direction, or is less than or equal to 1/2 the dimension of the second multilayered ceramic capacitor in the second axial direction. The direction in which internal electrodes provided in the first multilayered ceramic capacitor are layered is different from the direction in which internal electrodes provided in the second multilayered ceramic capacitor are layered.
A ceramic electronic component contains a multilayer chip constituted by alternately stacked multiple dielectric layers whose primary component is ceramic, and multiple internal electrode layers whose primary component is metal, wherein: at least one of the multiple internal electrode layers has, at its interface with an adjoining dielectric layer, a segregation layer containing an additive metal element(s) different from the primary component metal of the internal electrode layers; Si and the additive metal element(s) are present at least at one grain boundary in the adjoining dielectric layer; and the atomic concentration ratio of the additive metal element(s)/Si at the grain boundary is 1.3 or higher.
This tactile perception generation device 100 comprises: a first member 10; a second member 20 that is provided facing the first member 10; a piezoelectric vibrator 30a and a second piezoelectric vibrator 30d that are provided at different positions between the first member 10 and the second member 20, and that respectively cause the first member 10 and the second member 20 to vibrate in opposing directions due to application of a voltage; and a drive device 40 that supplies signals mutually differing in waveform, as voltages, to the piezoelectric vibrator 30a and the second piezoelectric vibrator 30d. The tactile perception generation device 100 makes it possible to express different tactile perceptions at different positions.
A detection device 100 comprises: a storage body 50 that can store a liquid 55; a sensor chip 10 provided on the storage body 50 and having a sensitive film 24 provided on the lower surface; and a pressing member 35 that is provided below the sensitive film 24 and that presses the storage body 50 by the sensor chip 10 being pressed downward, to thereby cause the liquid 55 to be supplied to the sensitive film 24.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
This ultrasonic transducer comprises: a frame 30 having a first gap 36a and a second gap 36b that is provided above the first gap and close to the first gap, the frame surrounding the first gap in plan view; a substrate 10 provided with a membrane 32 provided to a central section of the first gap in plan view, and a plurality of beams 34 provided within the first gap in plan view, the plurality of beams mechanically connecting the frame and the membrane and surrounding the second gap together with the frame and the membrane in plan view; piezoelectric layers 14 provided to each of at least two beams from among the plurality of beams; and at least two oscillation layers 18, each of which is provided with a first electrode 12 and a second electrode 16 that face each other across at least one of the piezoelectric layers. The piezoelectric layers between the at least two oscillation layers are separated from one another on the membrane.
A ceramic electronic component is provided with a laminate in which dielectric layers and internal electrode layers are alternately laminated. In at least one of the dielectric layers, the average particle diameter of the dielectric particles is 150 nm or less, and the number of the dielectric particles relative to one metal particle of an adjacent internal electrode layer is 5 to 35 in the extending direction of said adjacent internal electrode layer.
The present invention comprises: an element body 10 having a plurality of dielectric layers 11 and a plurality of internal electrode layers 12; an external electrode 20a provided above the element body 10 and connected to part of the plurality of internal electrode layers 12; a crystalline part 40 provided between the surface of the element body 10 and the external electrode 20a and that contains silicon and an element that is the same as at least any element contained in a ceramic which is the main component of the surface of the element body 10; a glass part 30 that is provided above the crystalline part 40, provided at a leading end of the external electrode 20a, and that contains silicon dioxide; and a plating layer provided above the external electrode 20a and the glass part 30. In a cross-section taken 5 μm from the leading end, on the opposite side to the external electrode 20a, (crystalline-part surface area) / (crystalline-part surface area + glass-part surface area) × 100(%) is 30% to 74%.
H01C 7/02 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
H01C 7/04 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
H01C 7/10 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
A ceramic electronic component characterized in that it is provided with: a laminate in which a plurality of dielectric layers and a plurality of internal electrode layers are alternately laminated, and the plurality of internal electrode layers are alternately exposed on two opposing end faces; and a pair of external electrodes arranged on the two end faces. The ceramic electronic component is also characterized in that the plurality of internal electrode layers have a thickness in the lamination direction of 0.5 μm or less, do not include ceramic particles, and have protrusions protruding toward external electrodes to be connected.
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
This ceramic electronic component comprises a multilayer chip and a pair of external electrodes and is characterized in that: the multilayer chip has an approximately rectangular parallelepiped shape and is formed of a plurality of dielectric layers and a plurality of internal electrode layers that are stacked in alternation between two cover layers for which a ceramic is the main component, wherein the plurality of internal electrode layers are alternately exposed at opposing first and second end faces of said approximately rectangular parallelepiped shape; the pair of external electrodes are disposed at the first end face and the second end face and have a plating layer disposed on an underlayer; each of the pair of external electrodes extends to at least either of an upper surface and lower surface of the multilayer chip considered in the stacking direction; and the cover layers contain at least one additive element from among elements that form a covalent hydride.
This ceramic electronic component is characterized by comprising: a laminated chip that has a substantially rectangular parallelepiped shape, that has layered alternately a plurality of dielectric layers and a plurality of internal electrode layers mainly made of Ni, and that is formed such that the internal electrode layers are alternately exposed to opposite first and second end surfaces of the substantially rectangular parallelepiped shape; and a pair of external electrodes that are provided to the first and second end surfaces and that have contact layers being in contact with the first and second end surfaces and being mainly made of Cu. The ceramic electronic component is also characterized in that a low melting metal having a lower melting point than that of Cu is added to the internal electrode layers and the contact layers, and in one or more of the internal electrode layers from the outermost layer of the internal electrode layers, the width of connection parts connected to the external electrodes is smaller than that in other regions.
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
At least one embodiment of the present invention provides a coil component including a base body; a coil conductor provided in the base body; a first external electrode electrically connected to the coil conductor; and a second external electrode electrically connected to the coil conductor. In at least one embodiment of the present invention, the base body includes a first group of metal magnetic particles and a resin binder, where the first group of metal magnetic particles has a plurality of first metal magnetic particles, the first group of metal magnetic particles has a first average circularity greater than 0.8, each of the first metal magnetic particles contains a main component and an additive, the main component includes at least one of Fe or Ni, and the additive accounts for less than 10 wt %.
H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
H01F 1/33 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metallic particles having oxide skin
H01F 17/04 - Fixed inductances of the signal type with magnetic core
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
24.
MULTILAYERED CERAMIC ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING SAME
This multilayered ceramic electronic component comprises: a substantially cube-shaped multilayered portion including a plurality of internal electrode layers and a plurality of dielectric layers that are alternately multilayered, and a cover layer provided on the outside in a multilayered direction of the plurality of internal electrode layers and the plurality of dielectric layers; a side margin portion provided on a side face that, among the six faces of the multilayered portion, is oriented in a first direction substantially orthogonal to the multilayered direction; and an external electrode provided on an end face that, among the six faces of the multilayered portion, is oriented in a second direction substantially orthogonal to the first direction and the multilayered direction, the external electrode being connected to the internal electrode layers. In a cross-sectional view of the multilayered portion taken along the multilayered direction and the first direction, a first end portion in the multilayered direction of the side margin portion adjoins a second end portion in the first direction of the cover layer from the multilayered direction at least at one corner of the multilayered portion.
This multilayer ceramic electronic component comprises: a substantially rectangular parallelepiped laminated body including a plurality of internal electrode layers and a plurality of dielectric layers that are alternately laminated; and a pair of external electrodes connected to a first end of the plurality of internal electrode layers, the first end being drawn out to a pair of end faces that face each other in the laminated body. In a cross-sectional view along a lamination direction, the laminated body includes a dielectric part adjacent to a second end of the internal electrode layer, and the dielectric part has dielectric crystal grains wrapping around the second end of the internal electrode layer.
A coil component includes a base body containing metal magnetic particles and a binder binding together the metal magnetic particles and having a first surface extending along a coil axis and a second surface opposing the first surface, a first external electrode, a second external electrode, and a coil conductor electrically connected to the first and second external electrodes. In one embodiment, the coil conductor has a winding portion, the winding portion has first conductor portions and one or more second conductor portions smaller in number than the first conductor portions. The first and second conductor portions alternate with and are connected to each other. A first dimension of the base body representing a dimension between the first surface and the second surface is greater than a second dimension of the base body representing a dimension of the base body between the third and fourth surface.
A vibration generation device comprises: piezoelectric elements 10a, 10b that include a piezoelectric layer and a first electrode and a second electrode sandwiching the piezoelectric layer, and that expand and contract in the direction in which the first electrode and the second electrode sandwich the piezoelectric layer due to a voltage being applied between the first electrode and the second electrode; and a casing 25 that includes a first member 30 and a second member 20 sandwiching the piezoelectric elements in said direction, the first member and the second member exerting pressure on the piezoelectric elements in said direction, and the first member outputting sound waves corresponding to the expansion and contraction of the piezoelectric elements in said direction.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
H04R 17/10 - Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
28.
LAMINATED CERAMIC ELECTRONIC COMPONENT, METHOD FOR MANUFACTURING SAME, AND CIRCUIT BOARD
This laminated ceramic electronic component has: a substantially cuboid laminate that includes a plurality of internal electrode layers and a plurality of dielectric layers that are alternatingly laminated; and a pair of external electrodes that respectively cover a pair of end surfaces of the laminate that face opposite directions, the external electrodes being alternatingly connected to the plurality of internal electrode layers along the lamination direction of the laminate. The surface roughness of at least one of a pair of first surfaces facing away from one another in the lamination direction, among the four surfaces of the laminate excluding the pair of end surfaces, is less than the surface roughness of at least one of a pair of second surfaces facing away from one another in a direction that is substantially orthogonal to each of the lamination direction and an opposing direction in which the pair of end surfaces face away from one another.
A ceramic electronic device includes a multilayer chip in which internal electrode layers are alternately stacked with dielectric layers, respectively, and are exposed alternately at a first surface and a second surface of the multilayer chip, wherein, in a capacity section in which the internal electrode layers exposed at the first and second surface overlap each other as viewed in the stacking direction, the dielectric layers are at least three dielectric layers, each dielectric layer including Sn, wherein a dielectric layer having a smaller Sn concentration is closer to an outermost end in the stacking direction than is a dielectric layer having a larger Sn concentration which is located at a center area in the stacking direction, in a relationship of at least two of the at least three dielectric layers in the capacity section.
To suppress damage to an element body due to stress applied via an external electrode, a ceramic electronic component according to one aspect comprises: a ceramic in an external shape having a first surface; an internal conductor provided in the ceramic by sandwiching a portion of the ceramic; an external electrode provided on the first surface and connected to the internal conductor; and a first surface portion of the ceramic which is located on the first surface side and contains a first element for improving the sinterability of the ceramic higher in concentration than that in the portion of the ceramic sandwiched by the internal conductor.
One object of the present invention is to provide an electronic component less prone to migration of impurity atoms between a conductor and an external electrode. A coil component as an electronic component includes: a base body; a conductor; a first external electrode electrically connected to the conductor; a second external electrode electrically connected to the conductor; and a metal film positioned between the conductor and the first external electrode, wherein the metal film contains metal particles configured such that an average of β/α is 0.8 to 1.2, where for each of the metal particles, α is a dimension of the metal particle in a direction horizontal to a boundary interface, and β is a dimension of the metal particle in a direction perpendicular to the boundary interface.
H01F 1/33 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metallic particles having oxide skin
H01F 27/32 - Insulating of coils, windings, or parts thereof
H05K 1/16 - Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
A multilayer ceramic electronic device includes a multilayer chip having a plurality of dielectric layers and a plurality of internal electrode layers facing each other through each of the plurality of dielectric layers, an external electrode that is provided on an end face of the multilayer chip in a second direction orthogonal to a first direction in which the plurality of internal electrode layers face each other, and has a plurality of glass portions that are spaced from each other on a surface of the external electrode, and a plated layer that is provided on the external electrode and has discontinuous portions on the plurality of glass portions.
Disclosed herein is a coil component including a base body having a magnetic body portion containing a metal magnetic material, a conductor provided inside the base body, an insulating layer that is provided on a surface of the magnetic body portion in the base body and that is a resin containing carbon particles, and an external electrode that extends along the surface of the base body and that is connected to the conductor.
In the present invention, a multilayer ceramic electronic component comprises an element body 10 that includes a laminated portion in which a plurality of dielectric layers 11 and a plurality of internal electrode layers 12 are laminated, wherein each of the plurality of internal electrode layers 12 is located so as to be exposed at either of two opposite end surfaces of the element body 10, and the element body 10 has, in a third direction that is orthogonal to a first direction in which the plurality of internal electrode layers 12 face each other and a second direction in which the two end surfaces are on opposite sides, a side margin 16 that is provided on the outside of a capacity portion 14, which is a region in which the plurality of dielectric layers 11 and the plurality of internal electrode layers 12 face each other, the side margin having a higher vanadium concentration relative to a main component ceramic than the capacity portion 14.
H01C 7/02 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
H01C 7/04 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
H01C 7/06 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
H01C 7/10 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
35.
CERAMIC ELECTRONIC DEVICE AND MANUFACTURING METHOD OF THE SAME
A ceramic electronic device includes a multilayer structure having a parallelepiped shape in which a plurality of dielectric layers and a plurality of internal electrode layers are alternately stacked in a vertical direction, the plurality of internal electrode layers being alternately exposed to two end faces of the parallelepiped shape. A side margin section is a section covering edges of the plurality of internal electrode layers in an extension direction toward two side faces of the parallelepiped shape. The side margin section has a structure in which a plurality of dielectric layers, each containing a ceramic as a main component, and a plurality of conductive layers, each containing a metal as a main component, are alternately stacked in the vertical direction. The plurality of conductive layers are respectively spaced and separated from the plurality of internal electrode layers.
C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
H01G 4/012 - Form of non-self-supporting electrodes
36.
ELECTRONIC COMPONENT, CIRCUIT BOARD, ELECTRONIC DEVICE, AND METHOD FOR MANUFACTURING ELECTRONIC COMPONENT
In order to suppress cracking and the deterioration of moisture resistance, an electronic component according to one embodiment comprises: an element body that has an outer shape having a pair of end faces and a lateral face connected to the end faces and extending from one end face to the other end face side, and that is provided with a conductor therein; a base layer that is in contact with the end faces and the lateral face; and a Ni layer that is formed on a surface of the base layer so as to span the end face sides and the lateral face side, and that has a thickest portion on the lateral face side, which is 30% or more thicker than the thickness on the end face sides.
An acoustic wave device includes a substrate, a lower electrode provided on the substrate, a piezoelectric layer provided on the lower electrode, an upper electrode provided on the piezoelectric layer to form a resonance region facing the lower electrode, and a multilayered acoustic reflection film provided between the substrate and the lower electrode in the resonance region, the acoustic reflection film having low acoustic impedance films and high acoustic impedance films alternately laminated, and the acoustic reflection film satisfying 0<(G3−G2)/G1<0.96 where G1 is a product of an average thickness in the resonance region and a density of a first film, G2 is a product of an average thickness and a density of the lower electrode in the resonance region, and the G3 is a product of an average thickness in the resonance region and a density of a second film.
H10N 30/053 - Manufacture of multilayered piezoelectric or electrostrictive devices, or parts thereof, e.g. by stacking piezoelectric bodies and electrodes by integrally sintering piezoelectric or electrostrictive bodies and electrodes
C04B 35/495 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
H10N 30/067 - Forming single-layered electrodes of multilayered piezoelectric or electrostrictive parts
A coil component according to one aspect of the present invention includes: a magnetic base body containing a plurality of metal magnetic particles and a binder binding the plurality of metal magnetic particles together; and a coil conductor provided in the magnetic base body and including a winding portion wound around a coil axis, wherein as viewed from a direction of the coil axis, the magnetic base body includes a core region enclosed by the winding portion, and a ratio of an area of the core region to a sum of an area of the winding portion and the area of the core region is 32% or larger.
This detection device comprises: a vibrator 10 provided with a sensitive film 16; a heater 18 that heats the sensitive film; a detector 28 that detects a detection value regarding the resonance frequency of the vibrator; a control unit that causes the heater to start heating of the sensitive film, acquires a first detection value detected by the detector in a state where the sensitive film is heated, and causes the heater to stop the heating of the sensitive film on the basis of the first detection value and a first reference value; and a calculation unit that acquires, after the heating of the sensitive film has been stopped, a second detection value, of a measurement target, detected by the detector, and calculates determination information regarding a gas on the basis of the second detection value.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
41.
MOTOR CONTROL DEVICE FOR MOTOR-ASSISTED VEHICLE, AND MOTOR-ASSISTED VEHICLE
In order for a passenger to be able to instruct switching of the degree of assistance of power driving or the degree of regeneration of regenerative braking, this motor control device includes: (A) a drive unit that causes a motor to perform power driving or regenerative braking; and a control unit that controls the drive unit to switch, in response to a prescribed operation including a brake operation, from one assistance mode to another assistance mode, the assistance modes being among a plurality of assistance modes corresponding to different degrees of assistance when performing power driving, or from one regeneration mode to another regeneration mode, the regeneration modes being among a plurality of regeneration modes corresponding to different degrees of regeneration when performing regenerative braking.
B60L 15/00 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performance; Adaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performance; Adaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
B60T 7/02 - Brake-action initiating means for personal initiation
B60T 8/17 - Using electrical or electronic regulation means to control braking
In order to enable regenerative braking to be performed more in line with the intention of a passenger, this motor control device comprises: (A) a drive unit for causing a motor to perform regenerative braking or powered running drive; and (B) a control unit for detecting a predetermined crank rotation, and, when causing the drive unit to execute first regenerative braking, execution of which is permitted if the predetermined crank rotation is detected, for setting, as a reference speed, a speed greater than a speed at a timing at which the predetermined crank rotation was detected, and controlling the drive unit to perform regenerative braking on the basis of the reference speed and a current speed.
The present invention comprises: a layered body that is provided with a layered portion in which oxide-based solid electrolyte layers having ionic conductivity and internal electrodes containing an electrode active material are layered in an alternating pattern, and a cover layer provided on at least one of an upper surface and lower surface of the layered body in the layered-portion direction, the layered body having a substantially cuboid shape and being formed such that the internal electrodes are exposed in an alternating pattern on a first edge surface and a second edge surface of the substantially cuboid shape opposite to each other; inorganic oxide layers that contain silicon and are provided on four surfaces of the layered body other than the first and second edge surfaces; and a first external electrode that is provided on the first edge surface and is connected to the internal electrodes exposed on the first edge surface. The first external electrode has a structure in which a second metal layer is formed on a first metal layer. The inorganic oxide layers extend to a portion of the first metal layer on the first edge surface. The second metal layer extends to the inorganic oxide layers on the four surfaces.
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
H01M 4/134 - Electrodes based on metals, Si or alloys
H01M 50/103 - Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure prismatic or rectangular
H01M 50/474 - Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the cells
H01M 50/54 - Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
H01M 50/548 - Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
H01M 50/553 - Terminals adapted for prismatic, pouch or rectangular cells
44.
MULTILAYER CERAMIC ELECTRONIC DEVICE AND MANUFACTURING METHOD OF THE SAME
A multilayer ceramic electronic device includes a multilayer chip and external electrodes opposite to each other in a second direction orthogonal to a first direction in which internal electrode layers face and include a ceramic grain. 0.722×ln(W×T/E)−5.75+(αE−α0)+(t/12)≤6.02 is satisfied, when a dimension of the multilayer chip in the first direction is T (μm), a dimension of the multilayer chip in a third direction orthogonal to the first direction and the second direction is W (μm), a number of the internal electrode layers is E, a thermal expansion coefficient of the external electrodes is αE (×10−6/K), a thermal expansion coefficient of the multilayer chip is α0 (×10−6/K), and a maximum value of a thickness of the external electrodes on a main face in the first direction is t (μm).
C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
A ceramic electronic component according to the present invention has a substantially rectangular parallelepiped shape laminate including internal electrode layers and dielectric layers that are alternately stacked, and a pair of external electrodes that respectively cover a pair of mutually opposing end faces in the laminate, and that are alternately connected to the internal electrode layers along the stacking direction of the laminate. The laminate has a pair of side margin parts respectively adjacent to both ends of each internal electrode layer in a direction in which the pair of end faces opposite each other and in an orthogonal direction substantially orthogonal to the stacking direction, and an electrode part sandwiched by the pair of side margin parts and including the internal electrode layer, and at least one of the pair of external electrodes has a step on one margin part side in the orthogonal direction, for which the thickness changes along the orthogonal direction, and when viewed from the step, the region on the pair of side margin parts side is thinner than the region on the electrode part side.
H01C 7/02 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
H01C 7/04 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
With respect to a multilayer ceramic capacitor according to the present invention, the dimension in a first axis direction is not less than 1.5 times the dimension in a second axis direction that is orthogonal to the first axis; and this multilayer ceramic capacitor is mounted on a mounting surface that is perpendicular to the first axis. This multilayer ceramic capacitor comprises a ceramic element and an external electrode. The ceramic element has: a pair of main surfaces that are perpendicular to the first axis; a pair of lateral surfaces that are perpendicular to the second axis; an end face that is perpendicular to a third axis that is orthogonal to the first and second axes; a multilayer body that comprises a plurality of internal electrodes which are stacked in the second axis direction and are led out to an connection end on the end face; and a pair of margin parts that cover the multilayer body from both sides in the first axis direction and have a higher grain growth inhibiting element concentration than the multilayer body. The external electrode covers the end face.
This laminated ceramic capacitor has a measurement in a second axial direction that is 1.5 times or more a measurement in a first axial direction, the laminated ceramic capacitor comprising a ceramic element body and a pair of external electrodes. The ceramic element body comprises: a laminated portion that has a plurality of internal electrodes that are alternately laminated with ceramic layers in a lamination direction that is parallel to the first axis and the second axis; and a pair of margin portions that cover the laminated portion from the width direction of the internal electrodes, the pair of margin portions including an additional element in a higher concentration than the laminated portion, said additional element comprising at least one element of Mg, Mn, Zr, Ti, Li, Mo, Nb, Cu, a rare earth element, or Sn. The plurality of internal electrodes comprise a plurality of inner layer internal electrodes, and a plurality of outer layer internal electrodes that have a maximum width measurement that is smaller than a minimum width measurement of the inner layer internal electrodes.
According to the present invention, a multilayer ceramic capacitor has a dimension in a first-axis direction that is at least 1.5 times the dimension thereof in a second axis direction perpendicular to the first axis, and is mounted on a mounting surface perpendicular to the first axis. The multilayer ceramic capacitor comprises a ceramic element body and an external electrode. The ceramic element body has: a pair of main surfaces perpendicular to the first axis; end surfaces perpendicular to a third axis perpendicular to the first and second axes; and a plurality of internal electrodes that contain Ni as a main component, are stacked in the second axis direction, and extend to connection terminals on the end surfaces. The external electrode contains Cu as a main component and covers the end surfaces. The plurality of internal electrodes are composed of: outer layer internal electrodes located on both outer sides in the second axis direction; and inner layer internal electrodes located on the inner side in the second axis direction. The distance between the pair of main surfaces is greater at the connection terminals of outer layer internal electrodes than at the third-axis directional center of inner layer internal electrodes.
A multilayer ceramic capacitor having a first-axis-direction dimension and a second-axis-direction dimension, the former dimension being at least 1.5 times the latter dimension, and comprising a ceramic body and a pair of external electrodes. The external electrodes comprise Cu as a main component and cover end surfaces of the ceramic body. The ceramic body comprises: a multilayer part having a plurality of internal electrodes which comprise Ni as a main component, have been stacked alternately with ceramic layers along the stacking direction parallel to the first axis or the second axis, and extend to connection ends on the end surfaces; and a pair of margins which covers the multilayer part from the width direction of the internal electrodes and includes a low-melting-point metal having a lower melting point than Ni. In each internal electrode, the width dimension, along the width direction, of the connection end is smaller than the width dimension, along the width direction, of the third-axis-direction center.
H01G 2/06 - Mountings specially adapted for mounting on a printed-circuit support
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
An all solid battery includes a multilayer structure in which first electrode layers each having a positive electrode active material and a negative electrode active material, solid electrolyte layers, and second electrode layers each having a positive electrode active material and a negative electrode active material are stacked, a thickness of the first electrode layers being different from a thickness of the second electrode layers, the first electrode layers being extracted to a first face of the multilayer structure, the second electrode layers being extracted to a second face of the multilayer structure. A first external electrode is provided on the first face and is connected to the first electrode layers. A second external electrode is provided on the second face and is connected to the second electrode layers.
A multilayer ceramic electronic component according to the present invention is provided with a ceramic element and an external electrode. The ceramic element has: a plurality of internal electrodes which are stacked in a first axis direction; and an end face from which the plurality of internal electrodes are led out, and which is perpendicular to a second axis that is orthogonal to the first axis. The external electrode comprises a base layer that is connected to the plurality of internal electrodes, while covering the end face. The plurality of internal electrodes and the base layer are configured from a polycrystalline body that is mainly composed of Cu. The average crystal grain size of the base layer is not less than 1.2 times those of the plurality of internal electrodes.
An inductor according to one embodiment includes: a base body having a mounting surface, a top surface, and a first end surface; first and second external electrodes provided to the mounting surface and spaced from each other; and an conductor disposed inside the base body. One end of the conductor is exposed from the mounting surface and connected to the first external electrode, and the other end of the conductor is exposed from the mounting surface and connected to the second external electrode. The base body is partitioned into a first region and a second region, the first region being enclosed by the conductor and the mounting surface, and a ratio of an area of the second region to an area of the first region is 0.95 to 1.0. The conductor contains a conductive material having a higher electric conductivity than a material of the first external electrode.
An all solid battery is characterized by including a solid electrolyte layer of which a main component is an oxide-based solid electrolyte having a NASICON type crystal structure which has a compositional formula of Li1+x+2y+aAyM′xM″2-x-yP3O12+c, in which “A” is a divalent metal element, “M′” is a trivalent metal element, “M″” is a quadrivalent transition metal, and satisfies 0
A dielectric powder includes barium titanate as a main component, at least one type of rare earth element that is solid-solved at 0.3 at % or more and 2.0 at % or less with respect to titanium, and magnesium that is solid-solved at 0.1 at % or more and 1.0 at % or less with respect to titanium.
H01G 4/232 - Terminals electrically connecting two or more layers of a stacked or rolled capacitor
C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
A coil element according to one embodiment includes: an insulator body including first insulating layers and second insulating layers laminated in a stacking direction; first conductive patterns formed on the first insulating layers; second conductive patterns formed on the second insulating layers; a first to fourth external electrodes each provided on a bottom surface of the insulator body; and a first to fourth lead via conductive member. The insulator body includes a first portion and a second portion. The electrical resistivity of the first portion is higher than that of the second portion. The first portion covers upper and lower surfaces of at least one of intermediate first conductive patterns in the intermediate region. The first lead via conductive member, the second lead via conductive member, the third lead via conductive member, and the first lead via conductive member are arranged outside the first portion.
A piezoelectric element includes: a piezoelectric ceramic which has a perovskite compound expressed by the composition formula LixNayK1−x−yNbO3 (where 0.02
C04B 35/495 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
H10N 30/045 - Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
Provided is a coil component having improved characteristics obtained by improved lead-out portions. A coil component according to one embodiment includes: a base body made of a magnetic material and having a mounting surface; first and second external electrodes provided on the mounting surface; and a coil conductor including a winding portion provided in the base body and extending in a circumferential direction around a coil axis, a first lead-out portion connecting between one end of the winding portion and the first external electrode, and a second lead-out portion connecting between another end of the winding portion and the second external electrode. The first lead-out portion includes a first top-side shaft portion, a first bottom-side shaft portion located closer to the coil axis than the first top-side shaft portion, and a first connection portion connecting between the first top-side shaft portion and the first bottom-side shaft portion.
An acoustic wave resonator includes comb-shaped electrodes each including electrode fingers and dummy electrode fingers, first tips of the electrode fingers of one of the comb-shaped electrodes and second tips of the dummy electrode fingers of the other facing each other, each dummy electrode finger including a first portion located closer to the corresponding second tip and a second portion located farther from the corresponding second tip than the first portion, the first portion being narrower in a short direction than the second portion, and an insulating film that is provided from an edge region of an overlap region to a first region, where the first portions of the dummy electrode fingers are located, of a dummy region and is provided in neither a central region of the overlap region nor a second region, where the second portions of the dummy electrode fingers are located, of the dummy region.
A coil component includes: a magnetic base body including a plurality of soft magnetic metal particles that contain Fe and Si, and an oxide film provided on the surface of each of the plurality of soft magnetic metal particles; and a coil conductor provided in the magnetic base body. The oxide film contains an oxide of Si and an oxide of element A (wherein the element A is at least one selected from the group consisting of Cr and Al). Each soft magnetic metal particle is divided into a central region and a surface region radially outward of the central region. The surface region contains a higher atomic proportion of Si than the central region. The soft magnetic metal particles include first soft magnetic metal particles that include Si—O precipitates separated from each other in the surface region.
H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
H01F 1/147 - Alloys characterised by their composition
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
60.
SOLID OXIDE FUEL CELL AND METHOD FOR MANUFACTURING SAME
This solid oxide fuel cell comprises: a metal substrate that has a through-hole in the thickness direction; a porous support that is provided on the metal substrate, and has metal as a main component; a mixture layer in which a metal component and a ceramic component are mixed, the mixture layer being provided on the support; and an anode that is provided on the mixture layer, wherein the diameter of the through-hole in the in-plane direction of the metal substrate is 0.1–6 mm.
H01M 8/1226 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material characterised by the supporting layer
H01M 4/86 - Inert electrodes with catalytic activity, e.g. for fuel cells
H01M 8/12 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
H01M 8/1213 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
H01M 8/1286 - Fuel cells applied on a support, e.g. miniature fuel cells deposited on silica supports
A multi-layer ceramic capacitor includes: a multi-layer unit including ceramic layers laminated in a first direction and electrodes disposed between the ceramic layers, positions of end portions of the electrodes falling within a range of 0.5 μm in a second direction; and side margins each containing manganese or magnesium and silicon and facing each other in the second direction. When each margin is equally divided into an inner region and an outer region, a total concentration of manganese and magnesium in the outer region is higher than a total concentration of manganese and magnesium in the inner region and higher than a total concentration of manganese and magnesium in the ceramic layers, and a concentration of silicon in the inner region is not less than a concentration of silicon in the outer region and higher than a concentration of silicon in the ceramic layers.
A coil component includes: a core part including: a winding shaft, and a flange part provided on an axial-direction end of the winding shaft, which has an exterior face on the opposite side of the winding shaft, first and second side faces, and first and second groove parts provided on the exterior face and having a cut-out part on each the first and second side faces; a coil part including: a winding part of a conductor wound around the winding shaft, and two lead parts of the conductor led out from the winding part; and two terminal parts formed on the exterior face of the flange part; wherein the two lead parts are led in from the cut-out parts on the first and second side faces and fitted inside the groove parts, respectively, on the exterior face, and included in the pair of terminal parts, respectively.
The present invention provides an all-solid-state battery which is provided with: an oxide-based solid electrolyte layer; a first electrode layer that is provided on a first main surface of the oxide-based solid electrolyte layer and contains an electrode active material and a solid electrolyte; a first margin layer that is provided around the first electrode layer on the first main surface; a second electrode layer that is provided on a second main surface of the oxide-based solid electrolyte layer and contains an electrode active material and a solid electrolyte; and a second margin layer that is provided around the second electrode layer on the second main surface. With respect to this all-solid-state battery, the first margin layer and the second margin layer contain a matrix material and a filler material that is dispersed in the matrix material and is more stable to moisture than the matrix material.
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
64.
ALL-SOLID-STATE BATTERY AND METHOD FOR MANUFACTURING SAME
This all-solid-state battery comprises: a laminated body in which an oxide-based solid electrolyte layer having ionic conductivity and an electrode layer containing an electrode active material are alternately laminated; and a cover layer provided on at least either one of the lamination-direction upper surface and the lamination-direction lower surface of the laminated body, the cover layer containing a filler material that has insulating properties and is of a tabular shape.
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
H01M 50/141 - Primary casings, jackets or wrappings of a single cell or a single battery for protecting against damage caused by external factors for protecting against humidity
65.
MULTILAYER CERAMIC ELECTRONIC DEVICE, CIRCUIT SUBSTRATE AND MANUFACTURING METHOD OF MULTILAYER CERAMIC ELECTRONIC DEVICE
A multilayer ceramic electronic device includes a multilayer chip having a plurality of dielectric layers and a plurality of internal electrode layers, one end of each of the plurality of internal electrode layers being exposed from the multilayer chip, an external electrode that is provided on an end face of the multilayer chip and is electrically connected to the one end of at least some of the plurality of internal electrode layers and includes a glass component, the end face being an end of the multilayer chip in a direction in which the plurality of internal electrode layers extend. The external electrode includes a crystal contacting or extending into the glass component at an interface between the external electrode and the end face of the multilayer chip. The crystal includes an element that is the same as at least one of elements included in the plurality of dielectric layers.
A multilayer ceramic electronic device includes a multilayer chip. The multilayer chip has a capacity section and a side margin. The side margin includes boron and silicon, and includes a first section and a second section in order from the capacity section side toward outside. A boron concentration of the first section is larger than a boron concentration of the second section. A segregation degree of silicon in the second section is larger than a segregation degree of silicon in the first section.
This vibration generation device is provided with a vibration body and a piezoelectric actuator. The vibration body contains a base material and a particle-containing layer formed on the surface of the base material and has a first main surface, which is the surface of the particle-containing layer, and a second main surface, which is on the reverse side from the first main surface. The particle-containing layer contains a plurality of particles, which comprise an inorganic material and have a median diameter of 8 to 30 μm, and a resin material, which covers the surface of the base material and fixes the plurality of particles to the surface of the base material. The plurality of particles are exposed on the first main surface, and the area ratio of the plurality of particles is 2% to 45%, as viewed from the direction orthogonal to the first main surface. The piezoelectric actuator is joined to the second main surface.
B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
A magnetic body of the coil component contains, as soft magnetic alloy grains, first grains whose alloy components are substantially Fe, Si, and Cr, and second grains which contain, as alloy components, Fe, Si, and an element other than Si or Cr that oxidizes more easily than Fe; the first grains have, on their surface, an amorphous oxide film containing Si and Cr; the second grains have, on their surface, a crystalline oxide layer containing the element other than Si or Cr that oxidizes more easily than Fe; and the crystalline oxide forms adhesion parts, each contacting a multiple number of the first grains via the amorphous oxide film thereof and coupling or bridging the multiple number of the first grains. The coil component can offer improved mechanical strength.
C22C 38/18 - Ferrous alloys, e.g. steel alloys containing chromium
H01F 1/153 - Amorphous metallic alloys, e.g. glassy metals
B22F 3/24 - After-treatment of workpieces or articles
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
B22F 1/16 - Metallic particles coated with a non-metal
69.
COIL COMPONENT, CIRCUIT BOARD ARRANGEMENT, ELECTRONIC DEVICE AND METHOD OF MANUFACTURING COIL COMPONENT
A coil component includes a base body formed of metal magnetic particles; a conductor provided inside and/or on the base body; and an external electrode electrically connected to the conductor. The external electrode includes first, second, and third electrode layers. The first electrode layer contains a metal material and is provided in a first predetermined area of a first face of the base body. The second electrode layer is provided in a second predetermined area of a second face and contains a metal material at a metal filling rate lower than that of the first electrode layer. The third electrode layer covers the first electrode layer and the second electrode layer and extends over the first predetermined area of the first face and the second predetermined area of the second face of the base body.
H01F 27/06 - Mounting, supporting, or suspending transformers, reactors, or choke coils
H01F 41/04 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets for manufacturing coils
70.
MULTILAYER CERAMIC ELECTRONIC COMPONENT, CIRCUIT BOARD, AND METHOD OF MANUFACTURING MULTILAYER CERAMIC ELECTRONIC COMPONENT
A multilayer ceramic electronic component includes a ceramic body, and first and second external electrodes facing each other in a second axis direction. The ceramic body includes internal electrodes, and has a rectangular parallelepiped shape having first and second end surfaces, and four connection surfaces each connecting the first and second end surfaces. The connection surface has an uneven region located between the first and second external electrodes. The uneven region includes recess portions formed along an extension direction intersecting the second axis direction and arranged along an arrangement direction orthogonal to a depth direction and the extension direction, and a protrusion portion located between the recess portions. A depth of the recess portion in the depth direction is 0.1 μm or greater and less than 2.5 μm. An arrangement pitch of the recess portions along the arrangement direction is 1 μm or greater and 80 μm or less.
A method for manufacturing a coil component comprises: forming a coil conductor including a winding portion, the winding portion including a plurality of first conductor portions and one or more second conductor portions smaller in number than the first conductor portions, the first and second conductor portions alternate with and connected to each other; forming a molded body by molding composite magnetic material including metal magnetic particles and a binder with the coil conductor being disposed inside the composite magnetic material; and heating the molded body to produce a magnetic base body. The magnetic base body is formed such that a distance between the first conductor portions and a first surface of the magnetic body is greater than a distance between the second conductor portions and a second surface of the magnetic base body opposite to the first surface, by molding, cutting or polishing.
H05K 3/30 - Assembling printed circuits with electric components, e.g. with resistor
H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
This tactile sensation generation device is equipped with a casing and a piezoelectric actuator. The casing is configured by joining a first member and a second member, and has a rod-like shape. The piezoelectric actuator is equipped with a piezoelectric body layer comprising a piezoelectric material, a positive-electrode internal electrode provided in the piezoelectric body layer, and a negative electrode internal electrode provided in the piezoelectric body layer and facing the positive electrode internal electrode, with the piezoelectric body layer therebetween, and when a voltage is applied between the positive electrode internal electrode and the negative electrode internal electrode, the piezoelectric actuator stretches/contracts along a direction perpendicular to the electrode surfaces of the positive electrode internal electrode and the negative electrode internal electrode, is clamped between the first member and the second member in an orientation in which the direction perpendicular to the electrode surfaces is the lengthwise direction of the casing, and is pressed along the lengthwise direction by the first member and the second member.
A solid oxide fuel cell includes an electrolyte layer including a solid oxide having oxide ion conductivity, an intermediate layer that is provided on the electrolyte layer and has oxide ion conductivity, and a cathode provided on the intermediate layer, wherein the electrolyte layer has a plurality of convex portions arranged in dimensional directions in a plan view, on a face thereof on the side of the intermediate layer, and wherein a face of the intermediate layer on the side of the cathode follows a shape of the face of the electrolyte layer on the side of the intermediate layer.
H01M 8/1226 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material characterised by the supporting layer
74.
COIL COMPONENT, CIRCUIT BOARD ARRANGEMENT, ELECTRONIC DEVICE AND METHOD OF MANUFACTURING COIL COMPONENT
A coil component includes a base body, a conductor inside the base body, and an external electrode electrically connected to the conductor. The base body has metal magnetic particles bonded by a first resin, and has a first surface that faces a mounting board, and a second surface adjacent to the first surface. The external electrode includes a first conductive resin layer on the first surface, which is made of a material that contains a second resin and first metal particles. The external electrode includes a second conductive resin layer on the second surface, which is made of a material that contains a third resin and second metal particles. A content rate of the third resin is smaller than a content rate of the second resin. The external electrode includes a metal layer covering the first and second conductive resin layers.
H05K 1/18 - Printed circuits structurally associated with non-printed electric components
H01F 41/04 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets for manufacturing coils
A multilayer ceramic electronic component includes a ceramic body that has internal electrodes stacked in a direction of a first axis, and end surfaces perpendicular to a second axis orthogonal to the first axis, the internal electrodes being alternately led out to the end surfaces, and external electrodes covering the end surfaces of the ceramic body, wherein each of the external electrodes includes a base film formed on a corresponding one of the end surfaces and connected to the plurality of internal electrodes, a first Ni film formed on the base film, a metal film that is formed on the first Ni film and contains a metal having a lower ionization tendency than Ni, as a main component, a second Ni film formed on the metal film and having a higher hydrogen concentration than the first Ni film, and a surface layer film formed on the second Ni film.
A manufacturing method of a multilayer ceramic electronic device includes: forming each of stack units by forming each of internal electrode patterns on each of dielectric green sheets, the each of internal electrode patterns including Ni, Sn and Au; forming a multilayer structure by stacking the each of stack units; and firing the multilayer structure, whereby each internal electrode layer is formed from the each of internal electrode patterns and each dielectric layer is formed from the each of the dielectric green sheets wherein, in the each internal electrode layer, an Au concentration near each interface between the each internal electrode layer and the each dielectric layer is larger than an Au concentration in each center portion in a thickness direction.
C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
An odor detection device includes a sensor chamber housing a sensor element, the sensor chamber having a first inlet, a first outlet, a second inlet, and a second outlet, the first and second outlets being located opposite the first and second inlets with the sensor element interposed therebetween, respectively, a flow channel including a filter therein, the flow channel being connected to the second outlet and being connected to the second inlet, a first gas delivery unit causing inflow of a gas at the first inlet and outflow of the gas at the first outlet, and a second gas delivery unit causing outflow of the gas at the second outlet and inflow of the gas at the second inlet.
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
G01N 29/036 - Analysing fluids by measuring frequency or resonance of acoustic waves
B08B 5/00 - Cleaning by methods involving the use of air flow or gas flow
A filter includes a multilayer body including dielectric layers and conductor layers, input and output terminals provided on a surface of the multilayer body, a first conductor pattern that has a planar shape forming at least a part of a closed pattern having an opening, a second conductor pattern that is connected to the input terminal, at least partially overlaps at least a part of the first conductor pattern, has an end portion located within the opening, and extends from an inside of the opening to an outside of the closed pattern, and a third conductor pattern that is connected to the output terminal, at least partially overlaps at least a part of the first conductor pattern, does not overlap the second conductor pattern, has an end portion located within the opening, and extends from the inside of the opening to the outside of the closed pattern.
A multilayer ceramic electronic component includes a ceramic body having internal electrodes stacked in a direction of a first axis, and end surfaces perpendicular to a second axis orthogonal to the first axis, and external electrodes covering the end surfaces of the ceramic body, respectively, wherein each of the external electrodes includes a base film formed on a corresponding one of the end surfaces and connected to the plurality of internal electrodes that are led out to the corresponding end surface, a first Ni film formed on the base film, a second Ni film formed on the first Ni film, a surface layer film formed on the second Ni film, and a metal film that is formed between the first Ni film and the second Ni film and contains a metal having a Young's modulus lower than that of Ni, as a main component.
One object is to improve the electrical insulation between a conducting wire and a dust core without forming an insulating layer such as a glass layer on the dust core. A coil component includes: a dust core including a first flange, a second flange, and a winding core, the first flange having an inside surface including a first surface and a second surface, the second flange being opposed to the inside surface of the first flange, the winding core extending in a core axis direction and connecting the first flange and the second flange, the dust core being formed of a plurality of metal magnetic particles bonded to each other via insulating material. The first surface may be less smooth than the second surface; and a conducting wire wound around the winding core so as to be in contact with the inside surface at the first surface.
H01F 27/32 - Insulating of coils, windings, or parts thereof
H01F 3/08 - Cores, yokes or armatures made from powder
H01F 27/30 - Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
81.
MULTI-LAYER CERAMIC ELECTRONIC COMPONENT, AND CIRCUIT BOARD
A multi-layer ceramic electronic component includes: a ceramic body including internal electrodes laminated and drawn to a surface of the ceramic body; and an external electrode including: a base film disposed on the surface of the ceramic body, connected to the internal electrodes, and formed from an electrically conductive material, a first nickel film disposed on and in contact with the base film in a thickness direction of the base film, and a second nickel film disposed on the first nickel film in a thickness direction of the first nickel film.
H01G 2/06 - Mountings specially adapted for mounting on a printed-circuit support
C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
In order to perform regenerative braking in a manner that complies more with the intent of an occupant, the motor control device according to an embodiment comprises: an inverter that causes a motor of an electrically assisted vehicle to perform power driving or regenerative braking; and a control unit that controls the inverter by determining, on the basis of a first condition or a second condition, the presence or absence of regenerative braking associated in advance with the first condition or the second condition, the first condition being about the crank angle that is the angle from a reference position of the crank in the case that the crank rotation speed which is the rotation speed of the crank in the electrically assisted vehicle is less than or equal to a first threshold, the second condition being about the cumulative crank rotation angle that is the cumulative rotation angle of the crank after the input torque caused by the rotation of the crank becomes less than or equal to a second threshold.
B60L 9/18 - Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines
H02P 23/20 - Controlling the acceleration or deceleration
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
83.
CERAMIC ELECTRONIC DEVICE AND MANUFACTURING METHOD OF THE SAME
A ceramic electronic device includes a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked. There are a concentration peak of a first metal and a concentration peak of a second metal at different positions in a stacking direction of the plurality of internal electrode layers and the plurality of dielectric layers between a dielectric layer and an internal electrode layer next to the dielectric layer, the first metal and the second metal being different from a main component metal of the plurality of internal electrode layers. The second metal is easier to ionize than the first metal. The concentration peak of the second metal is closer to the dielectric layer than the concentration peak of the first metal.
A ceramic electronic device includes a multilayer chip. Internal electrode layers include a first metal and a second metal of which a melting point is lower than that of the first metal. Internal electrode layers exposed to the first end face include a first and a second internal electrode layers. In a center portion of the multilayer chip, the second internal electrode layer is exposed to the first end face with a width “b”. In a lower portion, the first internal electrode layer is exposed to the first end face with a width “a”. An a/b ratio is 0.3 or more and 0.8 or less. A c/d ratio which is a ratio of a total stack number “c” of the first internal electrode layer with respect to a total stack number “d” of the first internal electrode layer and the second internal electrode layer is more than 0.1.
C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
According to the present invention, a detection device comprises: a substrate 10; a first piezoelectric thin film resonator 11a that comprises a first lower electrode 12a that is provided on the substrate, a first piezoelectric layer 14a that is provided on the first lower electrode, a first upper electrode 16a that is provided on the first piezoelectric layer, a first resonance region 50a at which the first lower electrode and the first upper electrode are opposite with at least a portion of the first piezoelectric layer therebetween, and a sensing film that is provided on the first upper electrode in the first resonance region; a second piezoelectric thin film resonator 11b that comprises a second lower electrode 12b that is provided on the substrate, a second piezoelectric layer 14b that is provided on the second lower electrode, a second upper electrode 16b that is provided on the second piezoelectric layer, and a second resonance region 50b at which the second lower electrode and the second upper electrode are opposite with at least a portion of the second piezoelectric layer therebetween; and a heater 31 that is provided on the substrate and controlled on the basis of the resonant frequency of the second piezoelectric thin film resonator.
G01N 5/02 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
H03H 9/17 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
This high-frequency system comprises: an antenna that transmits, to an object, a high-frequency electromagnetic wave vertically polarized with respect to a floor and that receives the electromagnetic wave reflected on the object; and a first dielectric layer 22 that is provided to the top layer of the floor in a region including a site 36 where the electromagnetic wave is reflected in a path of the electromagnetic wave between the antenna and the object, and that has a relative dielectric constant of 2 to 6 in the frequency of the electromagnetic wave. The electromagnetic wave propagating through the first dielectric layer is reflected on a portion below the first dielectric layer, and the distance between the object and the antenna, in a direction parallel to a plane including the upper surface of the first dielectric layer at said site, is 10 m or less.
G01S 7/03 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
H01Q 15/22 - Reflecting surfaces; Equivalent structures functioning also as polarisation filter
G01S 13/34 - Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
One object of the disclosure is to configure a coil component to inhibit ion migration of metals contained in a coil conductor not coated with a glass layer or a resin layer. A coil component includes a base body and a coil conductor disposed in the base body and made mainly of copper. A copper oxide film is formed on the surface of the coil conductor. The base body includes a plurality of metal magnetic particles, the plurality of metal magnetic particles containing Fe, Si, and an element A, the element A being at least one selected from the group consisting of Cr and Al. The surface of the metal magnetic particles is coated with an oxide film. In the oxide film, a sum of an atomic percentage of Si and an atomic percentage of the element A is higher than an atomic percentage of Fe.
An elastic wave sensor 100 comprises: a piezoelectric substrate 10; a pair of comb electrodes 24a and 24b which are provided on the piezoelectric substrate 10 and have a plurality of electrode fingers 22a and 22b, spaces between adjacent electrode fingers 22a and 22b on the piezoelectric substrate 10 being gaps 15; a first insulator layer 16 provided on the plurality of electrode fingers 22a and 22b; and a sensitive membrane 18 provided on the first insulator layer 16.
H03H 3/08 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
H03H 9/145 - Driving means, e.g. electrodes, coils for networks using surface acoustic waves
A multilayer ceramic capacitor includes a ceramic body and first and second external electrodes. The ceramic body has a capacitance forming portion including first and second internal electrodes and ceramic layers. Each of the first and second internal electrodes has a first region arranged along margin portions of the ceramic body and a second region arranged at inner sides of the first region. Each of the first and second internal electrodes includes a conductive component, and a continuity rate of the conductive component in a plan view as seen from the second axial direction in the first region has a first value, and a continuity rate of the conductive component in the plan view as seen from the second axial direction in the second region has a second value, the first value being greater than the second value.
A coil component includes a winding part and a magnetic base body. The winding part is constituted by a wound conductor. The magnetic base body includes a first magnetic portion and a second magnetic portion. The first magnetic portion has first metallic particles bonded together. An average particle diameter of the first metallic particles is a first particle diameter. The second magnetic portion has second metallic particles bonded together. An average particle diameter of the second metallic particles is a second particle diameter. The magnetic base body encapsulates the winding part. The second particle diameter is larger than the first particle diameter. At least a portion of the first magnetic portion is present around the winding part.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
91.
MULTILAYER CERAMIC ELECTRONIC DEVICE AND MANUFACTURING METHOD OF THE SAME
A multilayer ceramic electronic device includes a plurality of internal electrode layers, a plurality of dielectric layers, each of which has a perovskite structure that is expressed by a general formula of ABO3, a pair of cover layers respectively provided on an upper end and a lower end in a stacking direction in a capacity section, and has a main component that is a same as a main component of the plurality of dielectric layers. The capacity section has a first section positioned in a center portion in the stacking direction and a pair of second sections outside of the first section in the stacking direction. An A/B ratio of the first section is larger than the A/B ratio of the second section. The A/B ratio of the pair of cover layers is larger than the A/B ratio of the first section.
A ceramic electronic device includes a dielectric layer and an internal electrode layer that are alternately stacked. The dielectric layer contains ceria zirconia solid solution and (Cax1Bax2Sr1-x1-x2)(TiyZr1-y)O3 (0.6≤x1≤0.9, 0≤x2≤0.1, 0≤y≤0.1) as a main component. In the dielectric layer, a concentration of the ceria zirconia solid solution is 0.5 mol % or more and 5.0 mol % or less when (Cax1Bax2Sr1-x1-x2)(TiyZr1-y)O3 is 100 mol %.
A ceramic electronic device includes a multilayer chip in which each of a plurality of dielectric layers of which a main component is a ceramic and each of a plurality of internal electrode layers including Ni as a main component are alternately stacked, the multilayer chip having a rectangular parallelepiped shape, each of the plurality of internal electrode layers being exposed to two end faces opposite to each other; and external electrodes that are respectively provided on the two end faces and have a main component of Ni. The plurality of internal electrode layers include a sub metal element other than Ni, and co-materials. A concentration of the sub metal element in the plurality of internal electrode layers is higher than that in the external electrodes.
A ceramic electronic device includes a multilayer chip having a plurality of dielectric layers and a plurality of internal electrode layers so as to face each other, each of the plurality of internal electrode layers being stacked via each of the plurality of dielectric layers, an external electrode that is provided on an end face of the multilayer chip, contacts each end of at least a part of the plurality of internal electrode layers, and includes a co-material, the end face being an end of the multilayer chip in a direction in which the plurality of internal electrode layers extend, and a projection portion that is provided between the external electrode and the multilayer chip and has a projection shape toward the external electrode from the multilayer chip. A main component of the projection portion is ceramic including at least Ba, Ca and Ti.
A multiplexer includes a transmit filter including first acoustic wave resonators connected to a first path between a common terminal and a transmit terminal, one or some first acoustic wave resonators of the first acoustic wave resonators being provided on a first substrate, and a remaining first acoustic wave resonator being provided on a second substrate, and a receive filter including second acoustic wave resonators connected to a second path between the common terminal and a receive terminal, one or some second acoustic wave resonators of the second acoustic wave resonators being provided on the first substrate and a remaining second acoustic wave resonator being provided on the second substrate, and a resonator closest to the receive terminal in a plan view among the one or some first and second acoustic wave resonators being a second acoustic wave resonator of the one or some second acoustic wave resonators.
A multilayer ceramic device includes a multilayer chip. The multilayer chip has a capacity section, a side margin and an intermediate portion. The intermediate portion is provided between the capacity section and the side margin. An A/B ratio is larger in the side margin than in the capacity section, and is smaller in the intermediate portion than in the capacity section.
A ceramic electronic device includes a multilayer chip in which dielectric layers and internal electrode layers are alternately stacked. In an outermost one of the internal electrode layers, a metal oxide containing a main component element constituting the internal electrode layers is provided on an outer main surface of the outermost one, and a formation depth of the metal oxide is 0.5 μm or more and 5.0 μm or less. A segregation layer containing a sub metal element different from the main component metal is present at an interface between at least one of the internal electrode layers other than the outermost one and one of the dielectric layers adjacent to the at least one of the internal electrode layers.
A multilayer ceramic electronic component includes a ceramic body including ceramic layers stacked in a first axis direction and internal electrodes disposed between the plurality of ceramic layers and alternately led out to respective sides along a second axis direction orthogonal to the first axis direction, and external electrodes connected to the internal electrodes and opposed to each other in the second axis direction across the ceramic body. The internal electrodes include first and second peripheral internal electrodes collectively disposed in first and second peripheral portions at respective outer sides in the first axis direction, respectively and central internal electrodes collectively disposed closer to a center in the first axis direction than the first and second peripheral internal electrodes, and each of the first and second peripheral internal electrodes has a higher content ratio of ceramic particles than each of the central internal electrodes.
A multilayer ceramic electronic component includes a ceramic body, which includes an electrode-stacking portion in which internal electrodes are stacked, and cover portions facing each other in a first axis direction across the electrode-stacking portion, and external electrodes each including a covering portion that covers the ceramic body from a second axis direction, and an extending portion that extends over the cover portions along the second axis direction. The ceramic body includes crystal grains of ceramic and segregated small grains located between the crystal grains. In a cross section of an end section located between the extending portion of the cover portion and the electrode-stacking portion, the number of the segregated small grains having a grain size of 0.5% or greater and 10% or less of an average grain size of the crystal grains is 40% or greater and 95% or less of the number of the crystal grains.
A multilayer ceramic capacitor includes a ceramic body including a first internal electrode and a second internal electrode facing the first internal electrode, a pair of first external electrodes arranged on end surfaces of the ceramic body, respectively, connected to the first internal electrode; anda pair of second external electrodes arranged on side surfaces of the ceramic body, respectively, connected to the second internal electrode, wherein at least one of a first electrode main body portion and a second electrode main body portion has a first current regulating portion that is a cutout portion spaced apart from an outer edge of the corresponding first or second electrode main body portion and having a shape in which a ratio of a maximum longitudinal dimension to a maximum transverse dimension is greater than 1.
