| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical compensation film excellent in display quality which has an optical anisotropic layer made of a liquid crystal compound on a substrate manufactured according to melt-casting method using no solvent upon the film forming, to provide a polarizing plate using the optical compensation film and to provide a liquid crystal display device using the polarizing plate. <P>SOLUTION: The optical compensation film has the optical anisotropic layer made of at least one layer of the liquid crystal compound on the substrate manufactured according to a melt-casting method by heat-melting the film constituent material comprising at least one kind of stabilizer, plasticizer and cellulose resin at a melting temperature Tm of ≥120°C and ≤250°C. The optical compensation film satisfies the following characteristics (a), (b): (a) heat decomposition temperature Td(1.0) of the plasticizer included in the substrate>Tm (wherein Td denotes heat decomposition temperature and Tm denotes melting temperature), and (b) retardation values of the film satisfy the following respective ranges; 0 nm≤Ro≤20 nm and 70 nm<Rth≤400 nm. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
