OPTICAL FILM, POLARIZING PLATE, AND IMAGE DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical film which is high in contrast, is free from glare and character blurring, and is good in black tightness and a polarizing plate and display device using the optical film.

SOLUTION: The optical film having a light diffusion layer on a transparent support body is characterized in that; the ratio I(0°)/IO of the exit light intensity I(0°) in the normal direction of the surface of the film when the transmission scattered light is the exit light intensity IO in the normal direction of the transparent support body is 30 to 100%; the ratio I(6°)/IO in the position inclined 6° in the longitudinal direction of the film from the normal direction of the film surface is 0.70 to 5.0%; and the ratio I(30°)/IO to IO of the exit light intensity I(30°) in the position inclined 30° in the longitudinal direction of the film from the normal direction of the film surface is 0.0001 to 0.007%.

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