| 摘要 |
PROBLEM TO BE SOLVED: To provide a diffusion board for a projector translucent screen excellent in environmental stability such as heat and wet heat resistances, less liable to cause deformation such as warpage, excellent in dimensional stability, and giving improved brightness and improved sharpness of an image. SOLUTION: The diffusion board for a projector translucent screen is formed of a resin composition comprising (A) 90-99.9 parts by weight of a cyclic olefin-based resin and (B) 10-0.1 part by weight of organic crosslinked particles and has a total light transmittance of≥70%, wherein the absolute value of the difference between the refractive index n<SB>A</SB>of the cyclic olefin-based resin (A) and the refractive index n<SB>B</SB>of the organic crosslinked particles (B) is≥0.04 and the organic crosslinked particles (B) have an average particle diameter of≥2.0μm. By this invention, a diffusion board for a projector translucent screen excellent in environmental stability such as heat and wet heat resistances, less liable to cause deformation such as warpage, excellent in dimensional stability, and giving improved brightness and improved sharpness of an image is obtained. The diffusion board is suitable for use particularly as a screen of a rear projection television. COPYRIGHT: (C)2008,JPO&INPIT
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