CELLULOSE ACYLATE FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

The present invention provides a cellulose acylate film which maintains general display properties (high front surface contrast, optical leakage control toward a slope direction) when the cellulose acylate film is mounted on a liquid crystal display device, and is unlikely to generated display unevenness due to dew condensation. The cellulose acylate film has the film thickness of 20-60μm, contains cellulose acylate and an additive with the total acyl substitution degree of 2.0-2.55, and satisfies the following formulas (I)-(IV): (I)30 nm <= Re (590) <= 90 nm; (II) 100 nm <= Rth (590) <= 150 nm; (III) 2.0 <= Rth (590)/d <= 5.0; and (IV) internal haze <= 0.05 %; and (V)ΔM <= 1.0%.