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公开(公告)号：US20190123705A1
公开(公告)日：2019-04-25
申请号：US16160489
申请日：2018-10-15
Applicant: TDK CORPORATION
Inventor： Akihiko OIDE , Yoji TOZAWA , Seiichi NAKAGAWA , Shinichi KONDO , Takashi ENDO , Makoto YOSHINO , Noriaki HAMACHI
IPC: H03H7/01 , H01G4/228 , H01G4/008 , H03H1/00 , H01G4/38 , H01G4/40 , H01F27/28 , H01F27/29 , H01F27/32 , H01F27/40
Abstract: An element body includes a first function portion including a first material, a second function portion including a second material different from the first material, and an intermediate portion placed between the first function portion and the second function portion. The intermediate portion includes a first component included in the first material, and a second component included in the second material. A side surface of the element body includes surfaces of the first function portion, the second function portion, and the intermediate portion. Each of terminal electrodes includes electrode portion formed on the side surface across the surfaces of the first function portion, the second function portion, and the intermediate portion. An insulating layer is formed on the side surface in such a manner as to be in contact with at least a region exposed from the electrode portions between the electrode portions in the surface of the intermediate portion.
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公开(公告)号：US20230317342A1
公开(公告)日：2023-10-05
申请号：US18206202
申请日：2023-06-06
Applicant: TDK CORPORATION
Inventor： Shinichi SATO , Takahiro SATO , Yusuke NAGAI , Mitsuharu KOIKE , Kazuhiro MIURA , Seiichi NAKAGAWA , Shinichi KONDO , Takashi SUZUKI
CPC classification number: H01F17/0013 , H01F1/24 , H01F2017/0066
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：US20230223183A1
公开(公告)日：2023-07-13
申请号：US18082689
申请日：2022-12-16
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Shinichi SATO , Seiichi NAKAGAWA , Mitsuharu KOIKE , Takato SASAKI , Youhei IIDA
IPC: H01F27/29 , H01F27/255 , H01F27/28
CPC classification number: H01F27/29 , H01F27/255 , H01F27/2804 , H01F2027/2809
Abstract: The coil component includes an element body, a coil, a first electrode part and a second electrode part. The element body includes a main surface to be used as a mounting surface. The coil is disposed in the element body. The first electrode part and the second electrode part are spaced apart from each other in a first direction, embedded in the element body in such a way as to be exposed from the main surface, and electrically connected to the coil. The first electrode part includes a first surface exposed from the main surface and a protrusion disposed in the element body in such a way as to be spaced apart from the main surface. The protrusion protrudes more toward the second electrode part than the first surface in the first direction.
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公开(公告)号：US20220102039A1
公开(公告)日：2022-03-31
申请号：US17486640
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 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 plurality of metal magnetic particles contained in the element body include a plurality of metal magnetic particles having a particle diameter of ⅓ or more and ½ or less of a distance between the conductor portions adjacent to each other in the coil conductor. The metal magnetic particles having the particle diameter are arranged along a facing direction of the conductor portions between the conductor portions adjacent to each other in the coil conductor.
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公开(公告)号：US20190280667A1
公开(公告)日：2019-09-12
申请号：US16334991
申请日：2017-08-21
Applicant: TDK CORPORATION
Inventor： Akihiko OIDE , Naoki UCHIDA , Yoji TOZAWA , Makoto YOSHINO , Seiichi NAKAGAWA , Shinichi SATO , Hiroshi ONO , Takashi ENDO
Abstract: A multilayer LC filter array includes an element body of a rectangular parallelepiped shape, a first filter including a first inductor and a first capacitor that are disposed in the element body, a second filter including a second inductor and a second capacitor that are disposed in the element body, a first input terminal electrode and a first output terminal electrode that are connected to the first inductor, a second input terminal electrode and a second output terminal electrode that are connected to the second inductor, and a ground terminal electrode that is connected to the first capacitor and the second capacitor. The element body includes first and second principal surfaces opposing each other. The ground terminal electrode is disposed at a center of the first principal surface. The first input terminal electrode, the first output terminal electrode, the second input terminal electrode, and the second output terminal electrode are disposed at respective different corner portions of the element body when viewed from a direction orthogonal to the first principal surface.
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Patent Agency Ranking
公开(公告)号：US20170345553A1
公开(公告)日：2017-11-30
申请号：US15598606
申请日：2017-05-18
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO , Yuto SHIGA
CPC classification number: H01F27/2804 , H01F17/0013 , H01F27/29 , H01F27/292 , H01F27/324 , H01F2027/2809
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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公开(公告)号：US20240038436A1
公开(公告)日：2024-02-01
申请号：US18378815
申请日：2023-10-11
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO , Yuto SHIGA
CPC classification number: H01F27/2804 , H01F17/0013 , H01F27/292 , H01F27/29 , H01F27/324 , H01F2027/2809
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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公开(公告)号：US20220130594A1
公开(公告)日：2022-04-28
申请号：US17573301
申请日：2022-01-11
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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公开(公告)号：US20220102038A1
公开(公告)日：2022-03-31
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：US20200185144A1
公开(公告)日：2020-06-11
申请号：US16789893
申请日：2020-02-13
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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