公开(公告)号：US20210082625A1

公开(公告)日：2021-03-18

申请号：US17007022

申请日：2020-08-31

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yukihiro FUJITA ,  Kazuhiro TABATA ,  Shunsuke ABE ,  Takayuki OKADA

IPC: H01G4/30 ,  H01G4/012 ,  H01G4/12 ,  H01G2/02

Abstract: A multilayer capacitor includes a capacitor main body including dielectric layers, first inner electrodes, and second inner electrodes that are laminated together, first outer electrodes, second outer electrodes, first via conductors that electrically connect the respective first outer electrodes to the first inner electrodes, and second via conductors that electrically connect the respective second outer electrodes to the second inner electrodes. Through holes are provided in the second inner electrodes, and the first via conductors pass through the through holes. Through holes are provided in the first inner electrodes, and the second via conductors pass through the through holes. The first outer electrodes and the second outer electrodes are not provided on the first principal surface of the capacitor main body and provided only on its second principal surface.

公开(公告)号：US20170053727A1

公开(公告)日：2017-02-23

申请号：US15344793

申请日：2016-11-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kazuki ESHIMA ,  Tomoya YOKOYAMA ,  Takayuki OKADA

IPC: H01F27/24 ,  H01F41/04 ,  H01F41/02 ,  H01F27/28 ,  H01F27/29

CPC classification number: H01F27/24 ,  H01F5/00 ,  H01F17/0013 ,  H01F27/2804 ,  H01F27/292 ,  H01F27/30 ,  H01F41/0206 ,  H01F41/041 ,  H01F41/046 ,  H01F2017/0066 ,  H01F2027/2809

Abstract: In a laminated coil component include coil conductors are respectively included on magnetic layers and a carbon paste is included on a magnetic layer. The coil conductors include a partial coil conductor and a partial coil conductor respectively corresponding to an outer side portion circle and an inner side portion circle defining two circles. A width of the carbon paste at least partially overlaps an interval between the outer side portion circle and the inner side portion circle defining the two circles, and extends circularly along the two circles. The carbon paste is shifted to the interval between the outer side portion circle and the inner side portion circle defining the two circles at the time of pressure-bonding the magnetic layers. The carbon paste vanishes when being calcined to define an air gap.

Abstract translation: 在层叠线圈部件中，包括线圈导体分别包含在磁性层上，碳浆被包含在磁性层上。 线圈导体包括分别对应于外侧部分圆圈和限定两个圆圈的内侧部分圆圈的部分线圈导体和部分线圈导体。 碳糊的宽度至少部分地与限定两个圆的外侧部分圆与内侧部分圆之间的间隔重叠，并且沿着两个圆形圆周延伸。 在粘合磁性层时，碳膏移动到外侧部分圆与限定两个圆的内侧部分圆之间的间隔。 当煅烧时碳糊消失以限定气隙。

公开(公告)号：US20200075217A1

公开(公告)日：2020-03-05

申请号：US16679415

申请日：2019-11-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takayuki OKADA ,  Daigo MATSUBARA

IPC: H01F27/24 ,  H01F27/33 ,  H01F27/32 ,  H01F41/12 ,  H01L41/09 ,  H01L41/053

Abstract: A ceramic multilayer body includes an outer layer including a first ceramic base material, a hollow portion provided in an inner side of the outer layer, an intermediate layer including a second ceramic base material and provided inside the hollow portion, and a pair of coupling portions each coupling one of both principal surfaces of the intermediate layer to the outer layer, wherein a void is provided by the hollow portion between the outer layer and the intermediate layer except for regions occupied by the coupling portions, and wherein, when observed through the ceramic multilayer body in the lamination direction, the pair of coupling portions at least partially overlap with each other, and areas of the pair of coupling portions are each smaller than an area of the intermediate layer. The first ceramic base material and the second ceramic base material have different material compositions from each other.

公开(公告)号：US20170125155A1

公开(公告)日：2017-05-04

申请号：US15407322

申请日：2017-01-17

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tomoya YOKOYAMA ,  Takayuki OKADA

IPC: H01F27/28 ,  H01F27/29 ,  G05F3/08 ,  H01F27/40

CPC classification number: H01F27/2804 ,  G05F3/08 ,  H01F17/0013 ,  H01F27/292 ,  H01F27/40 ,  H01F2027/2809

Abstract: A multilayer coil component includes coil conductors including silver planar conductors and ferrite layers containing copper and stacked with the coil conductors and the planar conductors interposed therebetween. The coil conductors define a portion of a coil with a winding axis extending in a lamination direction. The planar conductors are arranged in the lamination direction at a position on an upper side of the coil so that each of principal surfaces thereof faces in the lamination direction and a specific region of the principal surface overlaps with the coil when viewed from the lamination direction. Each of the planar conductors includes first through holes penetrating the principal surface in the lamination direction in the specific region.

公开(公告)号：US20250081477A1

公开(公告)日：2025-03-06

申请号：US18678853

申请日：2024-05-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yoshimasa YOSHIOKA ,  Taiga KATO ,  Takaaki MIYASAKO ,  Takayuki OKADA

IPC: H01F17/04 ,  H01L23/522 ,  H01L27/06

Abstract: An inductor element includes an inductor wiring having an interruption portion in at least one place, a pair of external terminals that are connected to each of one side part and the other side part, which are located on both sides of the interruption portion, of the inductor wiring and that are exposed to an outside, at least one inductor variable resistance portion that is provided at the interruption portion, and at least one variable resistance terminal that is connected to the inductor variable resistance portion and that is exposed to the outside. The inductor variable resistance portion connects the one side part and the other side part, and changes a resistance value between the one side part and the other side part.

公开(公告)号：US20240405751A1

公开(公告)日：2024-12-05

申请号：US18802007

申请日：2024-08-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Bo YANG ,  Naoki SHINOHARA ,  Tsuyoshi KAJIWARA ,  Takayuki OKADA ,  Takaaki MIYASAKO

IPC: H03H11/16 ,  H03H11/28

Abstract: A digital variable reactance element includes digital capacitors and digital inductors connected in series or in parallel. Each of the digital capacitors includes a capacitor and a first digital switch connected in series or in parallel. The first digital switch is switchable between on and off states. Each of the digital inductors includes an inductor and a second digital switch connected in series or in parallel. The second digital switch is switchable between on and off states.