FILM FOR LIGHT DIFFUSING PLATE

摘要

PROBLEM TO BE SOLVED: To provide a polyester film excellent in deflection resistance characteristic toward moisture and heat and useful as a light diffusing plate by which high luminance of a liquid crystal display can be attained.

SOLUTION: The film for the light diffusing plate is made of a biaxially aligned polyester film of <20% deflection ratio by moisture and heat. An absolute value of difference between a refractive index of the biaxially aligned polyester film in a MD direction and a refractive index thereof in a TD direction is 0.01 or less.

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