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1. (WO2014200035) ELECTROMAGNETIC WAVE SHIELDING FILM, AND ELECTRONIC COMPONENT MOUNTING SUBSTRATE

Pub. No.:    WO/2014/200035    International Application No.:    PCT/JP2014/065511
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Thu Jun 12 01:59:59 CEST 2014
IPC: H05K 9/00
Applicants: SUMITOMO BAKELITE CO., LTD.
住友ベークライト株式会社
Inventors: SHIRAISHI, Fumihiro
白石 史広
YATSUZUKA, Taichi
八束 太一
Title: ELECTROMAGNETIC WAVE SHIELDING FILM, AND ELECTRONIC COMPONENT MOUNTING SUBSTRATE
Abstract:
This electromagnetic wave shielding film (100) includes a base material layer (1) and an electromagnetic wave blocking layer (3) laminated to the base material layer (1). The electromagnetic wave blocking layer (3) is composed of at least one type of material selected from conductive materials and magnetic-absorbent materials, and has surface resistance of 1×10-3Ω to 1×10-6Ω, inclusive. With this electromagnetic wave shielding film (100), the electromagnetic wave blocking layer (3) can be lighter in weight and thinner, and electromagnetic waves in a high frequency band, such as one on the GHz order, can be effectively blocked. The light transmittance of the electromagnetic wave shielding film (100) at wavelengths of 300 nm to 800 nm, inclusive, is 0.01% to 30%, inclusive.