| 摘要 |
PURPOSE:To reduce the weight and thickness of the above film by integrating the phase plate of a transparent high-polymer film and a transparent conductive film. CONSTITUTION:A polysulfone film is laminated as a backing layer on at least one surface of the phase plate of the transparent high-polymer film and a transparent film having conductivity is laminated to at least one surface thereof. The transparent high-polymer film which has double refractiveness and is formed by controlling the retardation value so as to have nearly the same value as the value of an STN type liquid crystal panel is used as the phase plate. The high-polymer film having >=85% transmittance of 600nm ray, <=15nm double refractions as retardation <=2.0mm/kg photoelastic constant, and <=5% thermal shrinkage at 200 deg.C is adequate as the backing layer of the phase film. A composite oxide essentially composed of indium oxide is used as the transparent conductive material. The weight and thickness of the film are reduced in this way. |
