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公开(公告)号：US20240412917A1
公开(公告)日：2024-12-12
申请号：US18696745
申请日：2022-06-27
Applicant: TDK Corporation
Inventor： Takeshi YOKOYAMA , Toshiyuki ABE , Yuki HASHIMOTO , Takeshi OKUMURA , Tomonaga NISHIKAWA
Abstract: To prevent the occurrence of a short-circuit failure through a magnetic body layer. A coil component includes interlayer insulating films and conductor layers which are alternately stacked on a magnetic body layer. The conductor layers respectively have coil patterns, terminal patterns which are provided at positions overlapping a terminal electrode, and terminal patterns which are provided at positions overlapping a terminal electrode. The terminal patterns are connected to the terminal electrode, and the terminal patterns are connected to the terminal electrode. The terminal pattern is insulated from the terminal electrode. This can prevent a short circuit failure between a coil pattern or terminal pattern and the terminal pattern through the magnetic body layer.
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公开(公告)号：US20240087787A1
公开(公告)日：2024-03-14
申请号：US18463649
申请日：2023-09-08
Applicant: TDK Corporation
Inventor： Yuki HASHIMOTO , Toshiyuki ABE , Takeshi OKUMURA , Tomonaga NISHIKAWA , Naoaki FUJII , Kazuhiro YOSHIKAWA
CPC classification number: H01F17/0013 , H01F17/04 , H01F27/022 , H01F27/292
Abstract: Disclosed herein is a coil component that includes a coil part embedded in a magnetic element body. The coil part has a structure in which plural interlayer insulating films and plural conductor layers having a coil pattern are alternately stacked. At least one of the conductor layers has a clearance area having no coil pattern and extending radially outward from a center axis of the coil part. The magnetic element body includes a first magnetic resin layer provided in an inner diameter area of the coil part, a second magnetic resin layer provided in a radially outside area of the coil part, and a fifth magnetic resin layer filled in the clearance area and contacting the first and second magnetic resin layers.
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公开(公告)号：US20240395452A1
公开(公告)日：2024-11-28
申请号：US18695782
申请日：2022-06-27
Applicant: TDK Corporation
Inventor： Yuki HASHIMOTO , Toshiyuki ABE , Takeshi OKUMURA , Tomonaga NISHIKAWA , Masanori SUZUKI
Abstract: To provide a stacked coupling coil component capable of achieving a desired coupling coefficient while suppressing the height of the component. A stacked coupling coil component 1 has conductor layers L1, L3, and L5 respectively including spiral coils 11 to 13, conductor layers L2, L4, and L6 respectively including spiral coils 21 to 23, and a conductor layer L7 including spiral coils 31 and 41 which are disposed at mutually different planar positions. The spiral coils 11 to 13 and 21 to 23 overlap one another. The spiral coils 11 to 13 and 31 are connected in series between terminal electrodes E1 and E2, the spiral coils 21 to 23 and 41 are connected in series between terminal electrodes E4 and E3. This allows adjustment of a coupling coefficient, making it possible to achieve a desired coupling coefficient while suppressing the height of the component.
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公开(公告)号：US20230326667A1
公开(公告)日：2023-10-12
申请号：US18183516
申请日：2023-03-14
Applicant: TDK Corporation
Inventor： Yuki HASHIMOTO , Toshiyuki ABE , Takeshi OKUMURA , Masanori SUZUKI
CPC classification number: H01F27/292 , H01F27/24 , H01F27/323
Abstract: Disclosed herein is a coil component that includes: a coil part including a coil conductor embedded in the magnetic element body and a bump electrode embedded in the magnetic element body through a second insulating resin layer and connected to an end portion of a coil conductor. A side surface of the bump electrode at a mounting surface is covered with the second insulating resin layer. The second insulating resin layer covering the side surface of the bump electrode has a first area having a first width in a planar direction parallel with the mounting surface and a second area having a second width in the planar direction larger than the first width.
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