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公开(公告)号：US12300423B2
公开(公告)日：2025-05-13
申请号：US17701448
申请日：2022-03-22
Applicant: TDK CORPORATION
Inventor： Akihiko Oide , Makoto Yoshino , Tomoki Okada , Hideki Saitou , Seiji Osada , Kazuhiro Ebina , Kunio Oda , Takashi Abe , Akio Shibata , Kazuo Iwai
Abstract: In the multi-layer coil component, the via conductor electrically connecting the coil layers adjacent to each other in the stacking direction of the element body protrudes from the coil region toward the side surface of the element body when viewed from the stacking direction of the element body. Therefore, the coil has a concave-convex portion. When a force is applied to the multi-layer coil component from the outside, the force is dispersed in the concave-convex portion of the coil, and thus defects are less likely to occur in the coil than in a coil in which the side of the side surfaces is flat.
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公开(公告)号：US12094642B2
公开(公告)日：2024-09-17
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
CPC classification number: H01F27/29 , H01F27/2804 , H01F41/043 , H01F2027/2809
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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公开(公告)号：US12040111B2
公开(公告)日：2024-07-16
申请号：US17486258
申请日：2021-09-27
Applicant: TDK CORPORATION
Inventor： Yusuke Nagai , Takashi Suzuki , Kazuhiro Ebina , Kouichi Kakuda , Kunihiko Kawasaki , Shinichi Kondo , Shinichi Sato , Seiichi Nakagawa , Mitsuharu Koike , Kazuhiro Miura
Abstract: A multilayer coil component includes an element body containing a plurality of metal magnetic particles and a resin existing between the plurality of metal magnetic particles and a coil disposed in the element body and configured to include a plurality of electrically interconnected coil conductors. At least one of the plurality of coil conductors has a spiral shape and has conductor portions adjacent to each other when viewed from a direction along a coil axis of the coil. The conductor portion includes a straight conductor portion extending in a straight line and a connecting conductor portion connecting the straight conductor portion and constituting a corner portion of the coil conductor. The metal magnetic particles between the connecting conductor portions adjacent to each other are lower in density than the metal magnetic particles between the straight conductor portions adjacent to each other.
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公开(公告)号：US11482371B2
公开(公告)日：2022-10-25
申请号：US16715245
申请日：2019-12-16
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：US11189413B2
公开(公告)日：2021-11-30
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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Patent Agency Ranking
公开(公告)号：US10665388B2
公开(公告)日：2020-05-26
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
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：US12224104B2
公开(公告)日：2025-02-11
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：US11127529B2
公开(公告)日：2021-09-21
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：US10541078B2
公开(公告)日：2020-01-21
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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公开(公告)号：US12249453B2
公开(公告)日：2025-03-11
申请号：US17523202
申请日：2021-11-10
Applicant: TDK CORPORATION
Inventor： Yusuke Nagai , Kazuhiro Ebina , Kouichi Kakuda , Kunihiko Kawasaki , Shinichi Kondo , Yuya Ishima , Masaki Takahashi , Takahiro Sato , Keito Yasuda , Shingo Hattori
Abstract: In a multilayer coil component, a coil is configured by electrically connecting coil conductors respectively provided in magnetic body layers constituting an element body and metal magnetic particles have a normal particle having an ellipsoidal shape and flat particles having an ellipsoidal shape flatter in a thickness direction than the normal particle. A plurality of the normal particles and at least one of the flat particles disposed such that a surface (reference surface) including a major axis direction orthogonal to the thickness direction and a minor axis direction is along the forming surface of the coil conductor in the magnetic body layer are arranged in the lamination direction of the magnetic body layers between the coil conductors.
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