Invention Grant
- Patent Title: Electromagnetic wave shielding film and shielding printed wiring board
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Application No.: US17613711Application Date: 2020-05-29
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Publication No.: US11647618B2Publication Date: 2023-05-09
- Inventor: Yoshiharu Yanagi
- Applicant: Tatsuta Electric Wire & Cable Co., Ltd.
- Applicant Address: JP Higashiosaka
- Assignee: TATSUTA ELECTRIC WIRE & CABLE CO., LTD.
- Current Assignee: TATSUTA ELECTRIC WIRE & CABLE CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: United IP Counselors, LLC
- Agent Kenneth M. Fagin
- Priority: JP 2019100531 2019.05.29
- International Application: PCT/JP2020/021383 2020.05.29
- International Announcement: WO2020/241835A 2020.12.03
- Date entered country: 2021-11-23
- Main IPC: H05K9/00
- IPC: H05K9/00 ; H05K1/02

Abstract:
The present invention provides an electromagnetic wave shielding film that can be made thinner and that has a higher folding endurance. The electromagnetic wave shielding film of the present invention is an electromagnetic wave shielding film including: a conductive adhesive layer containing conductive particles and an adhesive resin composition, wherein in a cut surface of the conductive adhesive layer after heating and pressurizing the electromagnetic wave shielding film at 150° C. and 2 MPa for 30 minutes, the conductive particles have an average aspect ratio of 18 or more, and an area percentage of the adhesive resin composition is 60 to 95% relative to a total area of the cut surface.
Public/Granted literature
- US20220151119A1 Electromagnetic Wave Shielding Film and Shielding Printed Wiring Board Public/Granted day:2022-05-12
Information query