Invention Publication
- Patent Title: COIL COMPONENT AND MANUFACTURING METHOD THEREFOR
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Application No.: US18525613Application Date: 2023-11-30
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Publication No.: US20240186056A1Publication Date: 2024-06-06
- Inventor: Yuuichi KAWAGUCHI , Kazuhiro YOSHIKAWA , Tomonaga NISHIKAWA , Naoaki FUJII , Liyi CHEN
- Applicant: TDK Corporation
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Priority: JP 22192697 2022.12.01
- Main IPC: H01F27/28
- IPC: H01F27/28 ; H01F27/32 ; H01F41/04 ; H01F41/12

Abstract:
Disclosed herein is a coil component that includes a magnetic element body, a coil pattern and a conductor post embedded in the magnetic element body, a post protective film provided between the conductor post and the magnetic element body, a cover insulating film covering a mounting surface of the magnetic element body, and a terminal electrode provided on the cover insulating film and connected to the conductor post through a first opening formed in the cover insulating film. The terminal electrode includes: a first conductor layer contacting the conductor post through the first opening and having a second opening through which a part of the conductor post is exposed; and a second conductor layer having a resistance value lower than the first conductive material, covering the first conductor layer, and contacting the part of the conductor post through the second opening.
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