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公开(公告)号：US20200234877A1
公开(公告)日：2020-07-23
申请号：US16843228
申请日：2020-04-08
Applicant: TDK CORPORATION
Inventor： Yuya OSHIMA , Makoto YOSHINO , Yoji TOZAWA , Junichi OTSUKA , Kazuo IWAI , Yohei TADAKI , Shinichi KONDO , Kazuhiro EBINA , Mamoru KAWAUCHI
Abstract: A method of manufacturing a laminated coil component is a method of manufacturing a laminated coil component provided with a laminate obtained by laminating a coil conductor forming a spiral coil and an insulator layer. The method of manufacturing a laminated coil component includes a step of providing a conductor pattern configured to become a coil conductor on a green sheet configured to become an insulator layer, and a step of laminating a plurality of green sheets provided with the conductor pattern. The conductor pattern includes a pair of first side surfaces opposed to each other in an orthogonal direction orthogonal to a laminating direction of the green sheet. At the step of laminating a plurality of green sheets, a depression is formed on at least one of the pair of first side surfaces.
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公开(公告)号：US20240128020A1
公开(公告)日：2024-04-18
申请号：US18474733
申请日：2023-09-26
Applicant: TDK CORPORATION
Inventor： Yuya OSHIMA , Junichi OTSUKA , Yohei TADAKI , Shinichi KONDO , Koki ITO , Yoji TOZAWA , Shigeshi OSAWA , Tsubasa OZAWA , Makoto YOSHINO
CPC classification number: H01F41/12 , H01F17/0013 , H01F27/32
Abstract: In a method for manufacturing a laminated coil component, in which a laminated coil component is manufactured by laminating insulator sheets in order on which conductors having predetermined patterns are formed, the insulator sheets are laminated such that a distance in a lamination direction between a first lead-out conductor laminated first and a first coil conductor laminated next is larger than a distance in the lamination direction between a second lead-out conductor laminated last and a second coil conductor laminated immediately before the second lead-out conductor.
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公开(公告)号：US20230005656A1
公开(公告)日：2023-01-05
申请号：US17945396
申请日：2022-09-15
Applicant: TDK CORPORATION
Inventor： Shinichi SATO , Yohei TADAKI , Akihiko OIDE , Yuma ISHIKAWA , Hidekazu SATO , Kazuhiro EBINA , Hiroyuki TANOUE
Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.
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公开(公告)号：US20250104897A1
公开(公告)日：2025-03-27
申请号：US18813360
申请日：2024-08-23
Applicant: TDK Corporation
Inventor： Tsubasa OZAWA , Yohei TADAKI , Takuya NIIBORI , Asuka ISHII , Yuya OSHIMA , Akihiko OIDE
Abstract: A multilayer coil component includes: an element body having a pair of first side surfaces opposite to each other in a first direction and a pair of second side surfaces opposite to each other in a second direction orthogonal to the first direction; and a coil disposed inside the element body and having a coil axis extending in a third direction orthogonal to the first direction and the second direction, in which one of the pair of first side surfaces is a mounting surface, and a ratio of a first gap in the first direction between the coil and the mounting surface to a size of the element body in the first direction is 12 to 30% in a cross section viewed in the third direction.
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Patent Agency Ranking
公开(公告)号：US20220013278A1
公开(公告)日：2022-01-13
申请号：US17368332
申请日：2021-07-06
Applicant: TDK CORPORATION
Inventor： Yuya OSHIMA , Junichi OTSUKA , Shinichi KONDO , Yohei TADAKI , Kazuo IWAI , Masayuki SUZUKI , Emiri MATSUHASHI , Takuya NIIBORI
Abstract: A multilayer coil component includes an element body, first and second coils, and a pair of external electrodes. The element body includes a plurality of insulator layers laminated in a first direction. The element body has a pair of end surfaces opposing each other in a second direction orthogonal to the first direction. The first coil and the second coil are disposed in the element body and respectively have coil shafts along the second direction. The pair of external electrodes are disposed on the pair of end surfaces and electrically connected to both ends of the first coil and the second coil. The first coil includes a first conductor layer, a second conductor layer, and a first through hole conductor. The coil shaft of the first coil is disposed inside the second coil.
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公开(公告)号：US20190122800A1
公开(公告)日：2019-04-25
申请号：US16158779
申请日：2018-10-12
Applicant: TDK CORPORATION
Inventor： Yuya OSHIMA , Shinichi KONDO , Junichi OTSUKA , Yohei TADAKI , Kazuo IWAI , Masayuki SUZUKI , Shigeshi OSAWA , Kazuhiro EBINA , Makoto YOSHINO , Mamoru KAWAUCHI
Abstract: First internal conductors are separated from each other in a first direction. Each of the first internal conductors includes a coil portion and a pad portion having a width larger than a width of the coil portion. The pad portions adjacent to each other in the first direction are connected to each other via a through-hole conductor and overlap each other when viewed from the first direction. When viewed from the first direction, each of the coil portions includes a first portion not overlapping the pad portion adjacent in the first direction and a second portion overlapping a part of the pad portion adjacent in the first direction. A second internal conductor is disposed on the same layer as the second portion and is positioned to overlap a portion of the pad portion adjacent in the first direction not overlapping the second portion when viewed from the first direction.
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公开(公告)号：US20180096789A1
公开(公告)日：2018-04-05
申请号：US15725129
申请日：2017-10-04
Applicant: TDK CORPORATION
Inventor： Yuya OSHIMA , Makoto YOSHINO , Yoji TOZAWA , Junichi OTSUKA , Kazuo IWAI , Yohei TADAKI , Shinichi KONDO , Kazuhiro EBINA , Mamoru KAWAUCHI
CPC classification number: H01F41/043 , H01F17/0013 , H01F27/2804 , H01F41/046 , H01F2017/0066
Abstract: A method of manufacturing a laminated coil component is a method of manufacturing a laminated coil component provided with a laminate obtained by laminating a coil conductor forming a spiral coil and an insulator layer. The method of manufacturing a laminated coil component includes a step of providing a conductor pattern configured to become a coil conductor on a green sheet configured to become an insulator layer, and a step of laminating a plurality of green sheets provided with the conductor pattern. The conductor pattern includes a pair of first side surfaces opposed to each other in an orthogonal direction orthogonal to a laminating direction of the green sheet. At the step of laminating a plurality of green sheets, a depression is formed on at least one of the pair of first side surfaces.
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公开(公告)号：US20170330673A1
公开(公告)日：2017-11-16
申请号：US15497314
申请日：2017-04-26
Applicant: TDK CORPORATION
Inventor： Shinichi SATO , Yohei TADAKI , Akihiko OIDE , Yuma ISHIKAWA , Hidekazu SATO
IPC: H01F27/245 , H01F41/04 , H01F27/32 , H01F27/29 , H01F27/28 , H01F41/12 , H01F27/255
CPC classification number: H01F27/245 , H01F17/0013 , H01F17/04 , H01F27/022 , H01F27/255 , H01F27/2804 , H01F27/29 , H01F27/292 , H01F27/323 , H01F41/043 , H01F41/122
Abstract: A multilayer coil component includes an element body made of a ferrite sintered body and a coil. The coil is configured with a plurality of internal conductors juxtaposed in the element body and electrically connected to one another. An average crystal grain size in a surface region of the element body is smaller than an average crystal grain size in a region between the internal conductors in the element body. A surface of the element body is covered with a layer made of an insulating material. The insulating material is not present among the crystal grains in the surface region of the element body.
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公开(公告)号：US20170309389A1
公开(公告)日：2017-10-26
申请号：US15488876
申请日：2017-04-17
Applicant: TDK CORPORATION
Inventor： Shinichi SATO , Yohei TADAKI , Akihiko OIDE , Yuma ISHIKAWA , Hidekazu SATO , Kazuhiro EBINA , Hiroyuki TANOUE
Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.
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