Optical compensatory sheet comprising cellulose acylate film

摘要

An optical compensatory sheet comprises a cellulose acylate film. The optical compensatory sheet can also comprises a transparent support and an optically anisotropic layer formed from a liquid crystal compound. The optical compensatory sheet is characterized in that the retardation value in plane measured at the temperature of 20° C. under the relative humidity of 20% is in the range of 97 to 103% based on the retardation value in plane measured at the temperature of 10° C. under the relative humidity of 20%.