Patent ID: 6740370
Filing Date: 2004-05-25
Classification: B32B,C08B,C08L,C09K,G02B,G02F,Y10T

Abstract:
An optically anisotropic film comprising:a support which contains a fatty acid cellulose ester having an acyl group including 2 or 3 carbon atoms, provided thereon a liquid crystal layer, wherein the support has a relationship represented by Formula (I) the number of luminescent points having a size exceeding 50 &mgr;m the support observed in cross Nicole state is zero per 250 mm2 and the number of luminescent points having a size of 5 to 50 &mgr;m of the support observed in cross Nicole state is 200 or less per 250 mm2 (n x+n y)/2âˆ’n z>0â€ƒâ€ƒFormula (I) wherein n x represents the refractive index of the support in the direction giving maximum refractive index in the plane of the support, n y represents the refractive index of the support in the direction perpendicular to the direction giving maximum refractive index in the plane of the support, n z represents the refractive index of the support in the thickness direction.