Patent ID: 7158200

Claim:
An optical compensation film comprising a support and an optically anisotropic layer, wherein the optically anisotropic layer is a layer in which orientation of a liquid crystalline compound is fixed, wherein the support is an optically biaxial cellulose ester film, wherein the liquid crystalline compound is rod-shaped, wherein retardation value R o in the plane direction of the support is from 25 to 95 nm, radiation ratio R t /R o of the retardation value R t the thickness direction to the retardation value R o is from 0.8 to 4.0, and nx>ny>nz is held, R o =( nx−nv )× d R t =[( nx+ny )/2 −nz]×d wherein nx represents a refractive index of the support in x direction which gives maximum refractive index in a plane of the support and ny represents a refractive index of the support in the y direction perpendicular to x in the plane of the support, nz represents a refractive index of the support in the z direction perpendicular to the plane of the support, and d represents the thickness (in nm) of the support.