| 摘要 |
PURPOSE: A security film for display device is provided to improve the contrast of a screen by removing remaining non-transparent film which is unnecessary in an etching stage. CONSTITUTION: A security film comprises an optical transmissive film(10) and a non-transmissive portion(13) at least formed in single-side the optical transmission on the light transmitting film. The adhesion of the viewing angle is within 7-15 gf/inch. The optical transmitting film comprises acetate butylate(CAB), polyvinyl chloride(PVC), polyethylene terephthalate(PET), polyacrylate, polymethylmethacrylate, the polyurethanes, polycarbonate, the polyethylene, the polypropylene.
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