Patent ID: 8313814
Filing Date: 2012-11-20
Classification: C08J,C09K,G02B,Y10T

Abstract:
1. An optically-compensatory film incorporating a polarizing plate, which comprises: (A) a long polarizing film which has an absorption axis in parallel with a longitudinal direction; (B) a long second phase difference film which comprises a cellulose acylate that includes a substituent having a polarizability anisotropy Da represented by following Expression (1) of 2.5′ 10 (C) a long first phase difference film which has a slow axis substantially orthogonal to a longitudinal direction, wherein the long first phase difference film is interposed between the long polarizing film and the long second phase difference film: wherein the total substitution degree of an acyl group in the cellulose acylate film is 2.4 or more to 3.0 or less, and a substitution degree of the aromatic acyl group in the cellulose acylate film is 0.1 or more to 1.0 or less.