公开(公告)号：US20230326661A1

公开(公告)日：2023-10-12

申请号：US18187785

申请日：2023-03-22

Applicant: TDK CORPORATION

Inventor： Noriaki HAMACHI ,  Toshinori MATSUURA ,  Junichiro URABE ,  Kazuya TOBITA ,  Yuto SHIGA ,  Youichi KAZUTA ,  Yuichi TAKUBO ,  Shunya SUZUKI ,  Xuran GUO ,  So KOBAYASHI

IPC: H01F27/28

CPC classification number: H01F27/2804

Abstract: The mainline pattern and the pair of bypass patterns in the multilayer inductor can be regarded as three inductors connected in parallel in the element body. That is, in the multilayer inductor, paralleling of the inductance is realized in the element body by the mainline pattern and the pair of bypass patterns. Therefore, the inductance value of the multilayer inductor as a whole can be reduced.

公开(公告)号：US20230130960A1

公开(公告)日：2023-04-27

申请号：US17969223

申请日：2022-10-19

Applicant: TDK CORPORATION

Inventor： Yuto SHIGA ,  Kazuya TOBITA ,  Youichi KAZUTA ,  Yuichi TAKUBO ,  Toshinori MATSUURA ,  Junichiro URABE ,  Noriaki HAMACHI

IPC: H01F27/28 ,  H01F27/29

Abstract: A multilayer coil component includes an element body including a main surface, a coil disposed in the element body, and an external electrode electrically connected to the coil. The external electrode includes an underlying metal layer disposed on the element body and a plated layer in contact with a surface of the underlying metal layer. The underlying metal layer includes a main surface electrode portion exposed from the main surface. At least one recess that opens to at least a surface of the main surface electrode portion is formed in the main surface electrode portion.

公开(公告)号：US20230032681A1

公开(公告)日：2023-02-02

申请号：US17873985

申请日：2022-07-26

Applicant: TDK CORPORATION

Inventor： Junichiro URABE ,  Hajime KATO ,  Toshinori MATSUURA ,  Kenichi INOUE ,  Koutarou WATANABE

IPC: H01F27/02 ,  H01F27/34 ,  H01F27/28

Abstract: A coil component includes: a base having a pair of side wall portions separated from and facing each other and a connecting wall portion interconnecting the pair of side wall portions; and an air core coil formed by winding a wire, in which the air core coil is disposed in a groove portion formed by the pair of side wall portions and the connecting wall portion.

公开(公告)号：US20220319763A1

公开(公告)日：2022-10-06

申请号：US17706146

申请日：2022-03-28

Applicant: TDK CORPORATION

Inventor： Kazuya TOBITA ,  Youichi KAZUTA ,  Yuto SHIGA ,  Yuichi TAKUBO ,  Junichiro URABE ,  Noriaki HAMACHI ,  Toshinori MATSUURA

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F41/04

Abstract: A multilayer coil component 1 includes an element body 2, a coil 5, a first terminal electrode 3, a second terminal electrode 4, a first connection conductor 6, and a second connection conductor 7. The coil 5 includes a first coil portion 8 that has one end of the coil 5 and is disposed on a side of a main surface 2c and a second coil portion 9 that has the other end of the coil 5 and is disposed on a side of the main surface 2d. A distance L2 between the first connection conductor 6 and the second coil portion 9 is larger than a distance L1 between the first connection conductor 6 and the first coil portion 8.

公开(公告)号：US20210249183A1

公开(公告)日：2021-08-12

申请号：US17166153

申请日：2021-02-03

Applicant: TDK CORPORATION

Inventor： Junichiro URABE ,  Hajime KATO ,  Yuto SHIGA ,  Kazuya TOBITA ,  Youichi KAZUTA ,  Noriaki HAMACHI ,  Toshinori MATSUURA ,  Yuichi TAKUBO ,  Asami TAKAHASHI ,  Munehiro TAKAKU

IPC: H01F27/29 ,  H01F17/00 ,  H01F27/28

Abstract: In a coil 5 of a multilayer coil component 1, an end portion 6a of a turn 6 closest to a side surface 2e in the facing direction of the side surface 2e and a side surface 2f is connected to a first external electrode 3 and an end portion 11a of a turn 11 closest to the side surface 2f in the facing direction is connected to a second external electrode 4. When viewed from the facing direction, the area of the region where the turn 6 and the second external electrode 4 face each other and the area of the region where the turn 11 and the first external electrode 3 face each other are larger than the area of the region where turns other than the turn 6 and the turn 11 and the first external electrode 3 or the second external electrode 4 face each other.

公开(公告)号：US20190245254A1

公开(公告)日：2019-08-08

申请号：US16340471

申请日：2017-10-23

Applicant: TDK CORPORATION

Inventor： Takekazu YAMANE ,  Tetsuya SHIBATA ,  Tsuyoshi SUZUKI ,  Junichiro URABE ,  Atsushi SHIMURA

IPC: H01P1/218

CPC classification number: H01P1/218 ,  G11B5/39 ,  H01L43/08 ,  H03B15/00

Abstract: A magnetoresistive effect device includes an input port, an input-side signal line, an MR unit including a magnetoresistive effect element and a magnetic-field generating signal line, and an output unit including a magnetoresistive effect element, an output-side signal line, and an output port. The magnetoresistive effect device further includes a DC application terminal. The magnetoresistive effect element is connected to the output port via the output-side signal line in the output unit. The input-side signal line is arranged so that a high frequency magnetic field generated from the input-side signal line is applied to the magnetoresistive effect element in the MR unit. In the MR unit, the magnetoresistive effect element is connected to the magnetic-field generating signal line. The magnetic-field generating signal line is arranged so that a high-frequency magnetic field generated from magnetic-field generating signal line is applied to the magnetoresistive effect element in the output unit.

公开(公告)号：US20180316077A1

公开(公告)日：2018-11-01

申请号：US15962587

申请日：2018-04-25

Applicant: TDK CORPORATION

Inventor： Takekazu YAMANE ,  Junichiro URABE ,  Tsuyoshi SUZUKI ,  Atsushi SHIMURA

IPC: H01P1/218 ,  H01F10/32 ,  H01P3/08

Abstract: A magnetoresistance effect device includes a first port, a second port, a magnetoresistance effect element, a first signal line that is connected to the first port and applies a high-frequency magnetic field to the magnetoresistance effect element, a second signal line that connects the second port to the magnetoresistance effect element, and a direct current application terminal that is connected to a power source configured to apply a direct current or a direct voltage in a lamination direction of the magnetoresistance effect element. The first signal line includes a plurality of high-frequency magnetic field application areas capable of applying a high-frequency magnetic field to the magnetoresistance effect element, and the plurality of high-frequency magnetic field application areas in the first signal line are disposed at positions at which high-frequency magnetic fields generated in the high-frequency magnetic field application areas reinforce each other in the magnetoresistance effect element.

公开(公告)号：US20180309046A1

公开(公告)日：2018-10-25

申请号：US15764826

申请日：2016-06-02

Applicant: TDK CORPORATION

Inventor： Junichiro URABE ,  Tetsuya SHIBATA ,  Atsushi SHIMURA ,  Takekazu YAMANE ,  Tsuyoshi SUZUKI

IPC: H01L43/08 ,  H01L43/10 ,  H01L43/02 ,  H01P1/215

CPC classification number: H01L43/08 ,  B82Y25/00 ,  H01L29/82 ,  H01L43/02 ,  H01L43/10 ,  H01P1/215 ,  H03B15/006

Abstract: Magnetoresistive effect device including magnetoresistive effect element which high-frequency filter can be realized is provided. Magnetoresistive effect device includes: at least one magnetoresistive effect element including magnetization fixed, spacer, and magnetization free layer wherein magnetization direction is changeable; first and second ports; signal line; and direct-current input terminal. First and second ports are connected to each other via signal line. Magnetoresistive effect element is connected to signal line and is to be connected to ground in parallel to second port. Direct-current input terminal is connected to signal line. Closed circuit including magnetoresistive effect element, signal line, ground, and direct-current input terminal is to be formed. Magnetoresistive effect element is arranged wherein direct current input from direct-current input terminal flows through magnetoresistive effect element in direction from magnetization fixed layer to magnetization free layer.

公开(公告)号：US20230073373A1

公开(公告)日：2023-03-09

申请号：US17903850

申请日：2022-09-06

Applicant: TDK CORPORATION

Inventor： Junichiro URABE ,  Toshinori MATSUURA ,  Kazuya TOBITA ,  Noriaki HAMACHI ,  Yuichi TAKUBO ,  Yuto SHIGA ,  Youichi KAZUTA

IPC: H01F27/29

Abstract: A coil component includes: an element body including a main surface; a pair of external electrodes disposed on the main surface; and a coil including a coil part positioned in the element body and a pair of connecting parts exposed from the element body and each connected to a corresponding external electrode of the pair of external electrodes. Each of the pair of external electrodes includes a first surface opposing the main surface and a second surface opposing the first surface. Each of the pair of connecting parts includes a first part coupled to the second surface of the corresponding external electrode and a second part continuous with the first part and an end of the coil part.

公开(公告)号：US20220310320A1

公开(公告)日：2022-09-29

申请号：US17694999

申请日：2022-03-15

Applicant: TDK CORPORATION

Inventor： Noriaki HAMACHI ,  Toshinori MATSUURA ,  Junichiro URABE ,  Kazuya TOBITA ,  Yuto SHIGA ,  Youichi KAZUTA ,  Yuichi TAKUBO

IPC: H01F41/04 ,  H01F41/10 ,  H01F27/28 ,  H01F27/29

Abstract: A method for manufacturing a multilayer coil component 1 includes: a step of forming an insulator layer 10; a step of forming a first coil conductor 20, a second coil conductor 21, a third coil conductor 22, and a fourth coil conductor 23; a step of obtaining a laminate L formed by laminating the insulator layer 10, the first coil conductor 20, the second coil conductor 21, the third coil conductor 22, and the fourth coil conductor 23; and a step of forming terminal electrodes 4 and 5 on the outer surface of the laminate L by a photolithography method.