Patent ID: 7078078

Claim:
An optical compensatory sheet comprising a transparent support and an optically anisotropic layer, wherein the optically anisotropic layer is formed from liquid crystal molecules and monomers having four or more double bonds, wherein said monomers are polymerized to form a cross-linked polymer in the optically anisotropic layer, wherein the transparent support has a retardation value in plane in the range of 0 to 50 nm and a retardation value along a thickness direction in the range of 70 to 400 nm, wherein the transparent support is a cellulose acetate film comprising cellulose acetate having an acetic acid content in the range of 59.0 to 61.5% and wherein the cellulose acetate film contains an aromatic compound having two or more aromatic rings in an amount of 0.01 to 20 weight parts based on 100 weight parts of cellulose acetate.