公开(公告)号：US10998130B2

公开(公告)日：2021-05-04

申请号：US16555169

申请日：2019-08-29

Applicant: TDK CORPORATION

Inventor： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Shou Kawadahara ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC: H01F41/04 ,  H01F17/00 ,  H01F27/29

Abstract: In a coil component and a method for manufacturing the same, a winding part of a coil is grown by plating so as to extend between resin walls of a resin body provided before the coil is grown by plating. The resin wall is interposed between adjacent turns of the winding part of the coil during the plating growth, and therefore contact between adjacent turns of the winding part of the coil cannot occur.

公开(公告)号：US10468184B2

公开(公告)日：2019-11-05

申请号：US14951004

申请日：2015-11-24

Applicant: TDK CORPORATION

Inventor： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Shou Kawadahara ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC: H01F41/04 ,  H01F17/00 ,  H01F27/29

Abstract: In a coil component 1 and a method for manufacturing the same, a winding part of a coil is grown by plating so as to extend between resin walls of a resin body provided before the coil is grown by plating. The resin wall is interposed between adjacent turns of the winding part of the coil during the plating growth, and therefore contact between adjacent turns of the winding part of the coil cannot occur.

公开(公告)号：US08988180B2

公开(公告)日：2015-03-24

申请号：US13757134

申请日：2013-02-01

Applicant: TDK Corporation

Inventor： Masazumi Arata ,  Yoji Tozawa ,  Takashi Endo ,  Toshiki Satoh ,  Takuya Kamei

IPC: H01F27/29 ,  H01F5/00 ,  H01F27/24 ,  H01F27/28 ,  H01F17/00

CPC classification number: H01F27/2804 ,  H01F17/0013 ,  H01F27/292

Abstract: A multilayer coil component has an element body, a coil, a pair of first external electrodes, a pair of second external electrodes, a first connection conductor, and a second connection conductor. The coil is composed of a plurality of internal conductors arranged in the element body and connected to each other. The first external electrodes are arranged on a first principal face of the element body. The second external electrodes are arranged on the first principal face. The first connection conductor is arranged between the coil and the first external electrodes in the element body and is connected to one end of the coil and to the first external electrodes. The second connection conductor is arranged between the coil and the second external electrodes in the element body and is connected to the other end of the coil and to the second external electrodes.

Abstract translation: 多层线圈部件具有元件主体，线圈，一对第一外部电极，一对第二外部电极，第一连接导体和第二连接导体。 线圈由布置在元件主体中并连接的多个内部导体构成。 第一外部电极布置在元件主体的第一主面上。 第二外部电极设置在第一主面上。 第一连接导体配置在线圈与元件主体的第一外部电极之间，并且与线圈的一端和第一外部电极连接。 第二连接导体布置在元件体中的线圈和第二外部电极之间，并且连接到线圈的另一端和第二外部电极。

公开(公告)号：US12217902B2

公开(公告)日：2025-02-04

申请号：US17545629

申请日：2021-12-08

Applicant: TDK CORPORATION

Inventor： Masataro Saito ,  Hokuto Eda ,  Kohei Takahashi ,  Takamasa Iwasaki ,  Masazumi Arata

IPC: H01F27/32 ,  H01F17/04 ,  H01F27/29

Abstract: By overlapping the protruding portion of the first insulator and the protruding portion of the second insulator via the protruding portion of the substrate, the DC superposition characteristic of the coil component is improved.

公开(公告)号：US12087497B2

公开(公告)日：2024-09-10

申请号：US17094433

申请日：2020-11-10

Applicant: TDK CORPORATION

Inventor： Hitoshi Ohkubo ,  Kenei Onuma ,  Masazumi Arata ,  Masataro Saito ,  Kohei Takahashi

IPC: H01F5/00 ,  H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F27/255

CPC classification number: H01F27/323 ,  H01F27/2804 ,  H01F27/29 ,  H01F27/255 ,  H01F2027/2809

Abstract: In a coil component, a main body portion is made of a metal magnetic powder-containing resin, and thus a resin component appears on end surfaces of the main body portion. In addition, since external terminal electrodes are made of a conductive resin, a resin component also appears on the surfaces of the external terminal electrodes. Accordingly, insulating coating layers are integrally covered with high adhesion with the end surfaces of the main body portion and the external terminal electrodes by the insulating coating layers coming into contact with the end surfaces of the main body portion so as to straddle the external terminal electrodes.

公开(公告)号：US11961652B2

公开(公告)日：2024-04-16

申请号：US16662220

申请日：2019-10-24

Applicant: TDK CORPORATION

Inventor： Hitoshi Ohkubo ,  Masazumi Arata ,  Kenichi Kawabata ,  Atsushi Sato

IPC: H01F27/36 ,  H01F1/20 ,  H01F27/28 ,  H01F27/29 ,  H01F27/32

CPC classification number: H01F27/2885 ,  H01F1/20 ,  H01F27/29 ,  H01F27/32 ,  H01F27/361

Abstract: In a coil component, a shield layer is provided after the unevenness of the surface of an element body is smoothened by the surface being covered with an insulating layer. A Cu layer of the shield layer is provided on a smooth surface, and thus a thickness variation can be suppressed and the Cu layer can be formed with a substantially uniform thickness. In the coil component, a point where the shield layer is thin or a point lacking the shield layer is unlikely to be generated and a functional degradation of the shield layer is effectively suppressed.

公开(公告)号：US11854733B2

公开(公告)日：2023-12-26

申请号：US17108023

申请日：2020-12-01

Applicant: TDK CORPORATION

Inventor： Masataro Saito ,  Masazumi Arata ,  Hokuto Eda ,  Kohei Takahashi ,  Takamasa Iwasaki

IPC: H01F5/00 ,  H01F27/28 ,  H01F27/32 ,  H01F27/29

CPC classification number: H01F27/2804 ,  H01F27/29 ,  H01F27/323 ,  H01F2027/2809

Abstract: In a coil component, a double coil is configured of a first coil portion and a second coil portion, and a first through conductor of the first coil portion and a second through conductor of the second coil portion are adjacent to each other. Thus, the first coil portion and the second coil portion have enhanced magnetic coupling at locations (that is, the first through conductor and the second through conductor) at which planar coil patterns of upper and lower surfaces of an insulating substrate are connected, in addition to magnetic coupling in the planar coil patterns wound around a through hole. Therefore, according to the coil component, a high coupling coefficient between the first coil portion and the second coil portion is realized.

公开(公告)号：US11705265B2

公开(公告)日：2023-07-18

申请号：US16877898

申请日：2020-05-19

Applicant: TDK CORPORATION

Inventor： Miyuki Asai ,  Takahiro Kawahara ,  Masazumi Arata ,  Hitoshi Ohkubo

IPC: H01F5/06 ,  H01F27/255

CPC classification number: H01F27/255 ,  H01F5/06

Abstract: In a coil component, a second magnetic portion disposed in the vicinity of a coil is designed to have a higher proportion of Fe than a metal magnetic powder-containing resin constituting a first magnetic portion. Therefore, a magnetic flux of the coil flows smoothly. Although the second magnetic portion has a relatively lower withstand voltage than the first magnetic portion, since the second magnetic portion is surrounded by the first magnetic portion, it is not exposed on an outer surface of a magnetic body. For this reason, a situation in which the coil and external terminal electrodes are short-circuited with the second magnetic portion therebetween is effectively curbed, and short-circuiting between the coil and the external terminal electrodes can be curbed.

公开(公告)号：US11569024B2

公开(公告)日：2023-01-31

申请号：US16877831

申请日：2020-05-19

Applicant: TDK CORPORATION

Inventor： Kenei Onuma ,  Masazumi Arata ,  Hitoshi Ohkubo

IPC: H01F27/32 ,  H01F27/28

Abstract: An upper end portion and a lower end portion of a second magnetic portion of a coil component are further away from a coil than when a third part and a fifth part are not present. For this reason, a magnetic flux is unlikely to be concentrated in the upper end portion and the lower end portion of the second magnetic portion, so that magnetic saturation is unlikely to occur. Therefore, improvement of direct current superimposition characteristics is realized in the coil component.

公开(公告)号：US11557427B2

公开(公告)日：2023-01-17

申请号：US16733293

申请日：2020-01-03

Applicant: TDK CORPORATION

Inventor： Hitoshi Ohkubo ,  Masazumi Arata ,  Manabu Ohta ,  Yuuya Kaname ,  Yoshihiro Maeda ,  Takahiro Kawahara ,  Hokuto Eda ,  Shigeki Sato

IPC: H01F27/32 ,  H01F17/00 ,  H01F17/04

Abstract: A coil component in which a change in thicknesses of the winding part is prevented is provided. According to the coil component, since each of a pair of neighboring resin walls and a seed part between the pair of resin walls are separated by a predetermined distance, a plating part grown on the seed part is easy to grow uniformly between the pair of neighboring resin walls. For this reason, the winding part whose surface is gentle and in which a change in thickness is prevented is obtained by plating growth.