Patent ID: 7199848
Filing Date: 2007-04-03
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 on which orientation of a liquid crystalline compound is fixed and the support is an optically biaxial cellulose ester film, wherein the liquid crystalline compound of the optical anisotropic layer is rod-shaped, and an average angle between the direction resulting in the maximum refractive index of said rod-shaped liquid crystalline compound and the surface of said cellulose ester film exceeds 0 degree but is less than 80 degrees, and wherein an angle between direction resulting in maximum refractive index of the rod-shaped liquid crystalline compound and the surface of the support varies from 0 to 90 degrees continuously or stepwise in a direction of thickness of the support.