公开(公告)号：US11842844B2

公开(公告)日：2023-12-12

申请号：US17166448

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: H01F27/28 ,  H01F27/29 ,  H01F17/00

CPC classification number: H01F27/292 ,  H01F17/0013 ,  H01F27/2847 ,  H01F2017/0073

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 of the pair of side surfaces 2e and 2f is connected to a second external electrode 4. The area at which the turn 6 faces the second external electrode 4 and the area at which the turn 11 faces the first external electrode 3 are smaller than the area at which turns 7, 8, 9, and 10 other than the turn 6 and the turn 11 face the first external electrode 3 or the second external electrode 4.

公开(公告)号：US09966922B2

公开(公告)日：2018-05-08

申请号：US15600066

申请日：2017-05-19

Applicant: TDK CORPORATION

Inventor： Tetsuya Shibata ,  Junichiro Urabe ,  Takekazu Yamane ,  Tsuyoshi Suzuki

IPC: H03H2/00 ,  H01L43/00 ,  G11B5/39

CPC classification number: H03H2/00 ,  G01R33/00 ,  G01R33/093 ,  G01R33/1284 ,  G11B5/3945 ,  H01L43/00

Abstract: A magnetoresistive effect device includes a magnetoresistive effect element first and second ports, a signal line, an inductor, and a direct current input terminal. The first port, the magnetoresistive effect element, and the second port are connected in series in this order via the signal line. The inductor is connected to one of the signal line between the magnetoresistive effect element and the first port and the signal line between the magnetoresistive effect element and the second port and is capable of being connected to ground. The direct-current input terminal is connected to the other of the above signal lines. A closed circuit including the magnetoresistive effect element, the signal line, the inductor, the ground, and direct-current input terminal is capable of being formed. The magnetoresistive effect element is arranged so that direct current flows in a direction from a magnetization fixed layer to a magnetization free layer.

公开(公告)号：US12020850B2

公开(公告)日：2024-06-25

申请号：US17191017

申请日：2021-03-03

Applicant: TDK CORPORATION

Inventor： Yuto Shiga ,  Hajime Kato ,  Junichiro Urabe ,  Kazuya Tobita ,  Youichi Kazuta ,  Noriaki Hamachi ,  Toshinori Matsuura ,  Yuichi Takubo

IPC: H01F27/29 ,  H01F17/00

CPC classification number: H01F27/292 ,  H01F17/0013

Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and a terminal electrode disposed on the element body. The element body has a first side face and a second side face, a first end face and a second end face, and a first main face and a second main face. The terminal electrode includes a first electrode portion and a second electrode portion. The first electrode portion has a first exposed face exposed on the first main face. The second electrode portion has a second exposed face exposed on the first end face. The first exposed face and the second exposed face are adjacent to each other interposing a ridge portion. The first exposed face is separated from an outer edge of the first main face. The second exposed face is separated from an outer edge of the first end face.

公开(公告)号：US10074688B2

公开(公告)日：2018-09-11

申请号：US15662697

申请日：2017-07-28

Applicant: TDK CORPORATION

Inventor： Tetsuya Shibata ,  Tsuyoshi Suzuki ,  Junichiro Urabe ,  Takekazu Yamane ,  Atsushi Shimura

IPC: G11B5/39 ,  H01L27/22 ,  H01L43/02 ,  H01L43/08 ,  H03H1/00 ,  H03H7/01

CPC classification number: H01L27/22 ,  G11B5/3903 ,  G11B5/3945 ,  H01L43/02 ,  H01L43/08 ,  H03H1/0007 ,  H03H2/00 ,  H03H7/0153

Abstract: A magnetoresistive effect device includes a first magnetoresistive effect element, a second magnetoresistive effect element, a first port, a second port, a signal line, and a direct-current input terminal. The first port, the first magnetoresistive effect element, and the second port are connected in series to each other in this order via the signal line. The second magnetoresistive effect element is connected to the signal line in parallel with the second port. The first magnetoresistive effect element and the second magnetoresistive effect element are formed so that the relationship between the direction of direct current that is input from the direct-current input terminal and that flows through the first magnetoresistive effect element and the order of arrangement of a magnetization fixed layer, a spacer layer, and a magnetization free layer in the first magnetoresistive effect element is opposite to the above relationship in the second magnetoresistive effect element.

公开(公告)号：US09906199B2

公开(公告)日：2018-02-27

申请号：US15066350

申请日：2016-03-10

Applicant: TDK CORPORATION

Inventor： Tetsuya Shibata ,  Junichiro Urabe ,  Atsushi Shimura ,  Takekazu Yamane

IPC: H03H2/00 ,  H01L43/00 ,  H03H7/01 ,  H03H1/00

CPC classification number: H03H1/0007 ,  H01L43/00 ,  H01L43/08 ,  H03H2/00 ,  H03H2001/0057 ,  H03H2001/0085

Abstract: A magnetoresistive effect device includes a magnetoresistive effect element including a magnetization fixed layer, a spacer layer, and a magnetization free layer; a first port; a second port; a signal line; an impedance element; and a direct-current input terminal. The first port, the magnetoresistive effect element, and the second port are connected in series in this order via the signal line. The impedance element is connected to ground and to the signal line between the magnetoresistive effect element and the first port or the second port. The direct-current input terminal is connected to the signal line at the opposite side to the impedance element with the magnetoresistive effect element in between the direct-current input terminal and the impedance element. A closed circuit including the magnetoresistive effect element, the signal line, the impedance element, the ground, and the direct-current input terminal is to be formed.

公开(公告)号：US12293864B2

公开(公告)日：2025-05-06

申请号：US17504330

申请日：2021-10-18

Applicant: TDK Corporation

Inventor： Nobuyuki Okuzawa ,  Kazuhiko Ito ,  Munehiro Takaku ,  Junichiro Urabe

IPC: H01F27/28 ,  H01F5/00 ,  H01F17/00 ,  H01F17/02 ,  H01F27/29 ,  H01F27/32 ,  H01F41/12

Abstract: Disclosed herein is a coil component that includes a coil pattern embedded in an element body and helically wound in a plurality of turns. The element body includes a support body having a cavity formed therein and a first insulating layer stacked on the support body so as to cover the cavity, thereby forming a hollow space inside the element body. The coil pattern includes a plurality of first sections formed along an inner wall of the cavity and a plurality of second sections formed on the first insulating layer. One ends of the plurality of first sections are connected respectively to their corresponding one ends of the plurality of second sections. The other ends of the plurality of first sections are connected respectively to their corresponding other ends of the plurality of second sections.

公开(公告)号：US12080471B2

公开(公告)日：2024-09-03

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

CPC classification number: H01F27/292 ,  H01F17/0006 ,  H01F27/2847 ,  H01F2017/0073

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：US11594366B2

公开(公告)日：2023-02-28

申请号：US17514020

申请日：2021-10-29

Applicant: TDK CORPORATION

Inventor： Youichi Kazuta ,  Yuichi Takubo ,  Yuto Shiga ,  Junichiro Urabe ,  Noriaki Hamachi ,  Kazuya Tobita ,  Toshinori Matsuura

IPC: H01F27/29 ,  H05K1/18

Abstract: A multilayer coil component 1 includes an element body 2, a pair of terminal electrodes 3, and a glass layer G provided on the terminal electrode 3. Each of the pair of terminal electrodes 3 is provided with a plurality of first projecting portions 33 tapered toward the other facing terminal electrode 3 side in an end portion 31b facing the side in the facing direction of a pair of end surfaces 2a and 2b. The glass layer G is provided along the edge of the terminal electrode 3 including at least the first projecting portion 33 in the end portion 31b of the terminal electrode 3.

公开(公告)号：US12272487B2

公开(公告)日：2025-04-08

申请号：US17177421

申请日：2021-02-17

Applicant: TDK CORPORATION

Inventor： Hajime Kato ,  Junichiro Urabe ,  Yuto Shiga ,  Kazuya Tobita ,  Youichi Kazuta ,  Noriaki Hamachi ,  Toshinori Matsuura ,  Yuichi Takubo ,  Munehiro Takaku

IPC: H01F27/28 ,  H01F17/00 ,  H01F17/02 ,  H01F27/29

Abstract: A multilayer coil component includes an element body, a coil, and a terminal electrode. The element body includes a first main face, second main face, first end face, second end face, first side face and second side face. The terminal electrode is connected to the coil. The terminal electrode includes a main-face electrode portion provided on the first main face. The coil includes a plurality of coil conductors. The plurality of coil conductors includes a first coil conductor disposed closest to the first main face to oppose to the main-face electrode portion and a second coil conductor disposed closer to the second main face than the first coil conductor. The first coil conductor has a width narrower than a width of the second coil conductor. The first coil conductor has an aspect ratio higher than an aspect ratio of the second coil conductor.

公开(公告)号：US12170163B2

公开(公告)日：2024-12-17

申请号：US17504344

申请日：2021-10-18

Applicant: TDK Corporation

Inventor： Nobuyuki Okuzawa ,  Kazuhiko Ito ,  Munehiro Takaku ,  Junichiro Urabe

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F41/12

Abstract: Disclosed herein is a coil component that includes a coil pattern embedded in a resin body. The resin body includes a winding core area surrounded by the coil pattern and having a first surface and a substantially flat second surface different in the circumferential direction position from the first surface, and a first surrounding area covering the first surface of the winding core area. The coil pattern includes first sections extending along the first surface of the winding core area and second sections extending along the second surface of the winding core area. One ends of the first sections are connected respectively to their corresponding one ends of the second sections. The other ends of the first sections are connected respectively to their corresponding other ends of the second sections.