Patent ID: 8545970
Filing Date: 2013-10-01
Classification: B32B,C09K,G02B,G02F,Y10T

Abstract:
1. An optical compensation film or an optical compensation layer, which is a film or a layer comprising a fumaric ester resin, wherein the film or the layer has three-dimensional refractive indexes satisfying the relationship nz>ny≧nx, wherein nx is the refractive index in a fast-axis direction of the film plane or the layer plane, ny is the refractive index in an in-plane direction perpendicular to the fast-axis direction, and nz is the refractive index in an out-of-plane vertical direction, wherein a ratio of the retardation R450/R550 as measured at a wavelength of 450 nm to the retardation as measured at a wavelength of 550 nm is 1.1 or lower, and wherein the optical compensation film or the optical compensation layer does not comprise fine particles.