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公开(公告)号：US20230230742A1
公开(公告)日：2023-07-20
申请号：US18085983
申请日：2022-12-21
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Yuya ISHIMA , Shinichi SATO , Seiichi NAKAGAWA , Kosuke ITO , Keito YASUDA , Youhei IIDA
CPC classification number: H01F17/0013 , H01F27/292 , H01F27/022 , H01F1/36
Abstract: A multilayer coil component includes an element body including an end surface, a coil disposed in the element body, and an external electrode disposed on an end portion of the element body and connected to the coil. The external electrode includes a conductive resin layer. The conductive resin layer includes resin and a plurality of metal particles and is in contact with the end surface. The conductive resin layer includes a metal particle group. The metal particle group consists a plurality of first metal particles included in the plurality of metal particles, and the plurality of first metal particles is adjacent to the end surface and separated from the end surface.
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公开(公告)号：US20200303117A1
公开(公告)日：2020-09-24
申请号：US16816891
申请日：2020-03-12
Applicant: TDK CORPORATION
Inventor： Shinichi SATO , Takahiro SATO , Yusuke NAGAI , Mitsuharu KOIKE , Kazuhiro MIURA , Seiichi NAKAGAWA , Shinichi KONDO , Takashi SUZUKI
Abstract: A multilayer coil component includes an element body and a plurality of coil conductors. The element body includes a plurality of metal magnetic particles and resin existing between the plurality of metal magnetic particles. The plurality of coil conductors is disposed in the element body, the plurality of coil conductors being separated from each other in a predetermined direction and electrically connected to each other. The plurality of metal magnetic particles included in the element body includes a plurality of metal magnetic particles having a particle size equal to or greater than one third of a distance between the coil conductors adjacent to each other in the predetermined direction and equal to or less than a half of the distance. Between the coil conductors adjacent to each other in the predetermined direction, the metal magnetic particles having the particle size are distributed along the predetermined direction.
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公开(公告)号：US20250069795A1
公开(公告)日：2025-02-27
申请号：US18941111
申请日：2024-11-08
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO , Yuto SHIGA
Abstract: A multilayer coil component includes an element body, a coil in the element body, a connection conductor in the element body, and an external electrode on the element body. The element body includes a principal surface arranged to constitute a mounting surface and an end surface positioned adjacent to the principal surface. The connection conductor includes one end connected to the coil and another end connected to the external electrode. The external electrode includes a sintered metal layer formed on the element body and a conductive resin layer formed on the sintered metal layer. The sintered metal layer includes a portion on the principal surface and a portion on the end surface. The portion on the principal surface has an average thickness smaller than an average thickness of the portion on the end surface.
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公开(公告)号：US20230125854A1
公开(公告)日：2023-04-27
申请号：US17970182
申请日：2022-10-20
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Takahiro SATO , Kunihiko KAWASAKI , Shinichi SATO , Seiichi NAKAGAWA , Kouichi KAKUDA , Mitsuharu KOIKE , Keito YASUDA , Takato SASAKI
Abstract: A stacked coil component includes: an element body, a coil disposed inside the element body; and a first outer electrode and a second outer electrode which are disposed in the element body. Each of the first outer electrode and the second outer electrode includes an electrode portion which includes a joining surface joined to the element body, and a plating surface opposite to the joining surface and is formed by plating, and of which at least a part is embedded in the element body.
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公开(公告)号：US20220108835A1
公开(公告)日：2022-04-07
申请号：US17490411
申请日：2021-09-30
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Takashi SUZUKI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Yuya ISHIMA , Shinichi SATO , Seiichi NAKAGAWA , Keito YASUDA , Ryuichi WADA
Abstract: A multilayer coil component includes: an element body containing a plurality of metal magnetic particles; a coil disposed in the element body; and an external electrode disposed on a surface of the element body and electrically connected to the coil. At least a part of a void part between the metal magnetic particles in the element body is filled with a first resin, the external electrode has a resin electrode containing a second resin and a conductor powder dispersed in the second resin, and the second resin connected from the resin electrode extends into the element body.
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Patent Agency Ranking
公开(公告)号：US20200303110A1
公开(公告)日：2020-09-24
申请号：US16817046
申请日：2020-03-12
Applicant: TDK CORPORATION
Inventor： Shinichi SATO , Takahiro SATO , Yusuke NAGAI , Mitsuharu KOIKE , Kazuhiro MIURA , Seiichi NAKAGAWA , Shinichi KONDO , Takashi SUZUKI
Abstract: A multilayer coil component includes an element body including a plurality of metal magnetic particles, and a plurality of coil conductors. The plurality of coil conductors is disposed in the element body. The plurality of coil conductors is separated from each other in a predetermined direction and electrically connected to each other. The plurality of coil conductors includes one pair of side surfaces opposing each other in the predetermined direction. Surface roughness of the one pair of side surfaces is less than 40% of an average particle size of the plurality of metal magnetic particles.
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公开(公告)号：US20230230738A1
公开(公告)日：2023-07-20
申请号：US18097556
申请日：2023-01-17
Applicant: TDK Corporation
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Shinichi SATO , Seiichi NAKAGAWA , Mitsuharu KOIKE , Takato SASAKI , Youhei IIDA
CPC classification number: H01F5/04 , H01F5/06 , H01F27/292 , H01F27/323 , H01F1/20
Abstract: A coil component includes an element body, a coil and a first electrode part. The element body includes a main surface which is used as a mounting surface. The coil is disposed in the element body. The first electrode part is embedded in the element body and electrically connected to the coil. The first electrode part includes a first surface exposed from the main surface and a second surface opposing the first surface. An area of the first surface is larger than an area of the second surface when viewed from a direction orthogonal to the first surface.
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公开(公告)号：US20230070168A1
公开(公告)日：2023-03-09
申请号：US17939036
申请日：2022-09-07
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Takahiro SATO , Kunihiko KAWASAKI , Shinichi SATO , Seiichi NAKAGAWA , Kouichi KAKUDA , Yuya ISHIMA , Mitsuru ITO
IPC: H01F27/29
Abstract: A multilayer coil component includes: an element body; a coil disposed in the element body; and a first external electrode disposed on a surface of the element body in which the first external electrode has a first electrode layer disposed on the surface of the element body and a first plating layer and a second plating layer disposed on the first electrode layer, and the first plating layer and the second plating layer are disposed so as to be scattered in a plurality of places on an edge of the first electrode layer.
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公开(公告)号：US20210383960A1
公开(公告)日：2021-12-09
申请号：US17337985
申请日：2021-06-03
Applicant: TDK CORPORATION
Inventor： Daiki KATO , Masashi SHIMOYASU , Yoji TOZAWA , Seiichi NAKAGAWA , Akihiko OIDE , Makoto YOSHINO , Kazuhiro EBINA
Abstract: A multilayer conductor component includes an element body, an internal conductor, and an external electrode. The external electrode includes a sintered metal layer. The sintered metal layer is disposed on an end surface, a pair of side surfaces, a first main surface, and a second main surface of the element body. An electrode length, which is a length in the first direction from an edge of the sintered metal layer to a reference plane including the end surface, at a central portion of the first main surface in the third direction, is shorter than the electrode length at each of the ridge portions. The electrode length at a central portion of each of the pair of side surfaces in the second direction is equal to or less than the electrode length at each of the ridge portions.
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公开(公告)号：US20210375527A1
公开(公告)日：2021-12-02
申请号：US17329348
申请日：2021-05-25
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Daiki KATO , Yoji TOZAWA , Takashi ENDO , Seiichi NAKAGAWA , Mitsuru ITO , Kenta SASAKI , Akihiko OIDE , Makoto YOSHINO , Kazuhiro EBINA
Abstract: A multilayer inductor component includes an element body, an internal conductor, and an external electrode. The internal conductor is disposed in the element body. The external electrode is disposed on a surface of the element body and electrically connected to the internal conductor. The external electrode includes a sintered metal layer and a plating layer. The sintered metal layer is disposed on the surface of the element body. The plating layer covers the sintered metal layer. The sintered metal layer includes a thick portion and thin portions. The thick portion covers the surface of the element body. A plurality of glass particles is dispersed in the thick portion. The thin portions cover glass particles exposed on a surface of the thick portion among the plurality of glass particles and being in contact with the plating layer.
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