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1. 发明授权

US11482365B2 Multilayer coil component 有权
公开(公告)号：US11482365B2
公开(公告)日：2022-10-25
申请号：US16854303
申请日：2020-04-21
申请人： TDK CORPORATION
发明人： Yuto Shiga , Yoji Tozawa , Masaki Takahashi , Takashi Endo , Hajime Kato
IPC分类号： H01F17/00 , H01F27/29
摘要： A multilayer coil component 1 includes an element body 2 having a plurality of stacked insulator layers 6 and having an outer surface provided with recessed portions 7 and 8, a coil 9 disposed in the element body 2, and terminal electrodes 4 and 5 connected to the coil 9 and disposed in the recessed portions 7 and 8. The recessed portions 7 and 8 are defined by a bottom surface and a side surface extending in a depth direction of the recessed portions 7 and 8 over the outer surface and the bottom surface, the terminal electrodes 4 and 5 have a first surface facing the bottom surface and a second surface facing the side surface, and a connection region A where a compound of elements constituting the element body 2 and a metal component are mixed is exposed to the second surface.

2. 发明授权

US10388448B2 Multilayer coil component 有权
公开(公告)号：US10388448B2
公开(公告)日：2019-08-20
申请号：US15617401
申请日：2017-06-08
申请人： TDK CORPORATION
发明人： Yuusuke Nagai , Takashi Suzuki , Kouichi Kakuda , Kunihiko Kawasaki , Shinichi Kondo , Yuya Ishima , Shinichi Sato , Masaki Takahashi , Takashi Endo
IPC分类号： H01F5/00 , H01F27/255 , H01F17/00
摘要： A multilayer coil component includes an element body including soft magnetic metal powders and a coil disposed in the element body. The coil includes a plurality of internal conductors electrically connected to each other. The plurality of internal conductors are separated from each other in a first direction and are adjacent to each other in the first direction. An average particle diameter of the soft magnetic metal powders located at an inner side of the coil when viewing from the first direction is larger than an average particle diameter of the soft magnetic metal powders located between the internal conductors adjacent to each other in the first direction.

3. 发明授权

US11211188B2 Multilayer coil component 有权
公开(公告)号：US11211188B2
公开(公告)日：2021-12-28
申请号：US16136944
申请日：2018-09-20
申请人： TDK CORPORATION
发明人： Yusuke Nagai , Takashi Suzuki , Hidekazu Sato , Takashi Endo , Kouichi Kakuda , Kunihiko Kawasaki , Shinichi Kondo , Yuya Ishima , Shinichi Sato , Masaki Takahashi
IPC分类号： H01F17/00 , H01F17/04 , H01F27/34 , H01F41/04 , H01F27/29
摘要： In a stepwise structure formed in a multilayer coil component, a difference occurs in a shrinkage amount between a maximum film thickness portion in which the number of layers is large and a minimum film thickness portion in which the number of layers is small due to portions different in the number of layers of coil parts (that is, upper coil part, lower coil part, and connecting part) adjacent to each other like the maximum film thickness portion and the minimum film thickness portion, readily causing a crack by an inner stress due to the difference in the shrinkage amount. In a multilayer coil component according to the present disclosure, a stress relaxation part overlapping with a maximum film thickness portion whose shrinkage amount is large is provided to relax inner stress in a stepwise structure, resulting in prevention of a crack.

4. 发明授权

US11302466B2 Multilayer coil electronic component 有权
公开(公告)号：US11302466B2
公开(公告)日：2022-04-12
申请号：US16199047
申请日：2018-11-23
申请人： TDK CORPORATION
发明人： Takashi Suzuki , Hidekazu Sato , Yusuke Nagai , Kouichi Kakuda , Kunihiko Kawasaki , Shinichi Kondo , Yuya Ishima , Shinichi Sato , Masaki Takahashi , Takashi Endo
IPC分类号： H01F1/147 , H01F1/33 , H01F27/28 , H01F17/04 , H01F17/00 , H01F1/24 , H01F1/26 , H01F27/29 , H01F27/255
摘要： A multilayer coil electronic component having improved inductance L, Q, and strength, and which has an element in which a coil conductor and a magnetic element body are stacked. The magnetic element body includes soft magnetic metal particles and a resin. The resin fills a space between the soft magnetic metal particles. Each of soft magnetic metal particles has a soft magnetic metal particle core and an oxide film covering the soft magnetic metal particle core. A layer of the oxide film contacting the soft magnetic metal particle core is made of an oxide including Si.

5. 发明授权

US10818422B2 Multilayer coil component 有权
公开(公告)号：US10818422B2
公开(公告)日：2020-10-27
申请号：US15895567
申请日：2018-02-13
申请人： TDK CORPORATION
发明人： Yuusuke Nagai , Takashi Suzuki , Kouichi Kakuda , Kunihiko Kawasaki , Shinichi Kondo , Yuya Ishima , Shinichi Sato , Masaki Takahashi , Takashi Endo
IPC分类号： H01F27/30 , H01F17/00 , H01F27/29
摘要： In a multilayer coil component, an end of a lower coil layer and an end of a connecting part are directly overlapped, and the end of the lower coil layer includes a contact edge positioned on a side of the connecting part and being in contact with the connecting part and a non-contact edge positioned on a side opposite to the connecting part and not being in contact with the connecting part. Then, the contact edge and the non-contact edge are not overlapped when viewed from a laminated direction. Consequently, a propagation distance of a crack becomes longer as compared with the case where an end face is parallel to the laminated direction, effectively suppressing advance of the crack. Suppressed advance of a crack in this manner makes the multilayer coil component provide a high component strength as a whole.

6. 发明授权

US10607756B2 Soft magnetic metal powder, soft magnetic metal fired body, and coil type electronic device 有权
公开(公告)号：US10607756B2
公开(公告)日：2020-03-31
申请号：US15618493
申请日：2017-06-09
申请人： TDK CORPORATION
发明人： Takashi Suzuki , Hidekazu Sato , Yuusuke Nagai , Kouichi Kakuda , Kunihiko Kawasaki , Shinichi Kondo , Yuya Ishima , Shinichi Sato , Masaki Takahashi , Takashi Endo
IPC分类号： H01F1/147 , H01F17/00 , H01F17/04 , H01F27/255 , H01F27/28
摘要： A soft magnetic metal powder includes a plurality of soft magnetic metal grains composed of an Fe—Si based alloy. A content of P in the Fe—Si based alloy is 110 to 650 ppm provided that a total content of Fe and Si is 100 mass %. A soft magnetic metal fired body includes soft magnetic metal fired grains composed of an Fe—Si based alloy. A content of P in the Fe—Si based alloy is 110 to 650 ppm provided that a total content of Fe and Si is 100 mass %.

7. 发明授权

US08988180B2 Multilayer coil component 有权
标题翻译：多层线圈组件
公开(公告)号：US08988180B2
公开(公告)日：2015-03-24
申请号：US13757134
申请日：2013-02-01
申请人： TDK Corporation
发明人： Masazumi Arata , Yoji Tozawa , Takashi Endo , Toshiki Satoh , Takuya Kamei
IPC分类号： H01F27/29 , H01F5/00 , H01F27/24 , H01F27/28 , H01F17/00
CPC分类号： H01F27/2804 , H01F17/0013 , H01F27/292
摘要： 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.
摘要翻译：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。

8. 发明授权

US11631521B2 Electronic component 有权
公开(公告)号：US11631521B2
公开(公告)日：2023-04-18
申请号：US16396913
申请日：2019-04-29
申请人： TDK CORPORATION
发明人： Yoji Tozawa , Takuo Abe , Yuma Ishikawa , Hidekazu Sato , Takashi Endo , Masashi Shimoyasu , Kazuma Takahashi
IPC分类号： H01F27/28 , H03H1/00 , H03H7/09 , H01F41/04 , H01F27/29
摘要： An electronic component includes an element body and an external electrode disposed on the element body. The external electrode includes an underlying metal layer, a conductive resin layer, and a plating layer. The underlying metal layer is disposed on the element body. The conductive resin layer contains a plurality of conductive fillers and is disposed on the underlying metal layer. The plating layer is disposed on the conductive resin layer. A part of the plurality of conductive fillers is sintered with the underlying metal layer and is coupled to the underlying metal layer. Another part of the plurality of conductive fillers is exposed to a surface of the conductive resin layer and is in contact with the plating layer.

9. 发明授权

US10984939B2 Multilayer coil component 有权
公开(公告)号：US10984939B2
公开(公告)日：2021-04-20
申请号：US15419522
申请日：2017-01-30
申请人： TDK CORPORATION
发明人： Takashi Endo , Kenji Komorita , Kunihiko Kawasaki , Hidekazu Sato , Takashi Suzuki
IPC分类号： H01F5/00 , H01F17/00
摘要： A multilayer coil component includes an element body, a coil including a plurality of internal conductors, and a plurality of stress-relaxation spaces. The plurality of internal conductors are separated from each other in a first direction in the element body. Each stress-relaxation space is in contact with a surface of the corresponding internal conductor and powders exist in each stress-relaxation space. The element body includes element body regions located between the internal conductors adjacent to each other in the first direction. Each stress-relaxation space includes a first boundary surface with each internal conductor and a second boundary surface with each element body region. The first boundary surface and the second boundary surface oppose each other in the first direction. A distance between the first boundary surface and the second boundary surface is smaller than a thickness of each element body region in the first direction.

10. 发明授权

US10784834B2 Lamination type LC filter array 有权
公开(公告)号：US10784834B2
公开(公告)日：2020-09-22
申请号：US16334991
申请日：2017-08-21
申请人： TDK CORPORATION
发明人： Akihiko Oide , Naoki Uchida , Yoji Tozawa , Makoto Yoshino , Seiichi Nakagawa , Shinichi Sato , Hiroshi Ono , Takashi Endo
IPC分类号： H03H7/01 , H03H1/00 , H03H7/075 , H01F17/00 , H01F27/00
摘要： 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, a second filter including a second inductor and a second capacitor, 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 a principal surface. The ground terminal electrode is disposed at a center of the 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 principal surface.

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