OPTICAL FILM, POLARIZING PLATE, LIQUID CRYSTAL PANEL AND MANUFACTURING METHOD OF OPTICAL FILM

摘要

PROBLEM TO BE SOLVED: To obtain an optical film which is used as a viewing angle compensation film capable of obtaining a liquid crystal panel having no light leakage, no color shift and having a wide viewing angle and to obtain a polarizing plate and the liquid crystal panel using the optical film.

SOLUTION: The optical film is consisting of an annular olefinic resin. At a film surface remote from a film end part by ≥50mm, variation of retardation is ±10% or less and variation of the optical axes is central value ±10° or less when retardation in a film surface (RO) and an optical axis in the film surface are measured at every 5mm distance along a longitudinal direction of the film.

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