CELLULOSE ACYLATE FILM, METHOD FOR PRODUCING THE SAME, OPTICAL COMPENSATION FILM, ANTIREFLECTION FILM, POLARIZING PLATE AND IMAGE DISPLAYING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a cellulose acylate film having improved thickness uniformity and suitable e.g. as an optical film for a liquid crystal display device and provide an optical compensation film free from optical nonuniformity and produced by using a cellulose acylate film having improved thickness uniformity, an antireflection film, a polarizing plate having excellent displaying performance and an image displaying device.

SOLUTION: The cellulose acylate film has a maximum height difference (P-V value) of the thickness of ≤1μm in a circle of 60 mm diameter drawn by using an arbitrary point on the film as the center, a front retardation Re(λ)of Re(590)≤5 nm and a retardation in the film thickness direction Rth(λ)of ¾Rth(590)¾≤60 nm.

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