Patent ID: 7158200
Filing Date: 2007-01-02
Classification: G02B,G02F

Abstract:
1. 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 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.