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：US20240234014A9

公开(公告)日：2024-07-11

申请号：US18361370

申请日：2023-07-28

Applicant: TDK CORPORATION

Inventor： So KOBAYASHI ,  Youichi KAZUTA ,  Yuto SHIGA ,  Yuichi TAKUBO ,  Xuran GUO ,  Toru YAGINUMA

IPC: H01F27/29 ,  H01F17/00

CPC classification number: H01F27/292 ,  H01F17/0013

Abstract: A coil component includes an element body, a coil, a first terminal electrode, and a second terminal electrode. The coil has a coil axis extending in a direction in which a pair of side surfaces face each other. The first terminal electrode and the second terminal electrode have first electrode portions exposed on end surfaces and second electrode portions exposed on a main surface, respectively, and are not exposed on each of the pair of side surfaces. In a direction in which a pair of main surfaces face each other, a distance between each of ends of the first electrode portions on the main surface side and the main surface is larger than a distance between a top portion of the coil closest to the main surface and the main surface.

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.

公开(公告)号：US20220310305A1

公开(公告)日：2022-09-29

申请号：US17694971

申请日：2022-03-15

Applicant: TDK CORPORATION

Inventor： Youichi KAZUTA ,  Kazuya TOBITA ,  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 connecting conductor 6, and a second connecting conductor 7. The first connecting conductor 6 extends along a first direction D1 and has a third side 6c intersecting with a second direction D2 and a third direction D3 in a cross section orthogonal to the extension direction. The coil 5 faces the third side 6c of the first connecting conductor 6 when viewed from the first direction D1, and a side 5a facing the third side 6c is parallel to the third side 6c at the part that faces the third side 6c of the first connecting conductor 6.

公开(公告)号：US20220293333A1

公开(公告)日：2022-09-15

申请号：US17690489

申请日：2022-03-09

Applicant: TDK CORPORATION

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

IPC: H01F27/29 ,  H01F17/04 ,  H01F27/28 ,  H01F41/10

Abstract: A coil component includes an exterior body, a coil, and a pair of terminal electrodes. The coil is disposed inside the exterior body. The pair of terminal electrodes are electrically connected to the coil and are disposed on the exterior body. The exterior body includes a first portion that covers the coil and is made of a resin, and a second portion including a side surface on which the pair of terminal electrodes are disposed. The second portion includes a material having a relative permittivity lower than a relative permittivity of the resin and is disposed between the coil and the pair of terminal electrodes.

公开(公告)号：US20220246346A1

公开(公告)日：2022-08-04

申请号：US17590888

申请日：2022-02-02

Applicant: TDK CORPORATION

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

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

Abstract: A multilayer coil component includes: an element body including a plurality of insulator layers that are laminated; a coil; and a pair of external terminals. The element body has a rectangular parallelepiped shape. The element body includes a pair of main surfaces opposing each other in a first direction, a pair of end surfaces opposing each other in a second direction, and a pair of side surfaces opposing each other in a third direction. The pair of external terminals are separated from each other in the second direction. The pair of external terminals are embedded in the element body apart from the pair of end surfaces and the pair of side surfaces. Each of the pair of external terminals includes an exposed surface exposed from one of the main surfaces and an inner surface disposed in the element body. The inner surface includes a depression or a protrusion.

公开(公告)号：US20210280362A1

公开(公告)日：2021-09-09

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

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：US20210272743A1

公开(公告)日：2021-09-02

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: H01F27/29 ,  H01F17/00 ,  H01F17/02

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.