Invention Grant
- Patent Title: Electromagnetic wave absorbing sheet
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Application No.: US16476842Application Date: 2018-01-05
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Publication No.: US11477925B2Publication Date: 2022-10-18
- Inventor: Masayuki Toyoda , Masao Fujita
- Applicant: Maxell, Ltd.
- Applicant Address: JP Kyoto
- Assignee: Maxell, Ltd.
- Current Assignee: Maxell, Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2017-046341 20170310
- International Application: PCT/JP2018/000125 WO 20180105
- International Announcement: WO2018/163584 WO 20180913
- Main IPC: H05K9/00
- IPC: H05K9/00 ; B32B5/02 ; B32B15/09 ; B32B15/20 ; B32B27/36

Abstract:
Provided is an electromagnetic-wave interference type electromagnetic-wave absorbing sheet that can favorably absorb electromagnetic waves in a desired frequency band while having high flexibility and light transmittance and being handled easily. The electromagnetic-wave absorbing sheet having flexibility and light transmittance includes an electric resistance film 1, a dielectric layer 2 and an electromagnetic-wave shielding layer 3 that each have light transmittance and that are stacked. The electric resistance film is formed of a conductive organic polymer, and the electromagnetic-wave shielding layer has an aperture ratio of 35% or more and 85% or less.
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