| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical compensation film having an optical anisotropic layer made of a liquid crystal compound on a substrate manufactured according to a melt-casting method, to provide a polarizing plate using the optical compensation film and to provide a display device, particularly the liquid crystal display device of the OCB mode having excellent visibility. <P>SOLUTION: The optical compensation film has the optical anisotropic layer made of at least one layer of 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, at least one kind of 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 > Tm, and (b) inplane retardation value Ro of the substrate and retardation value Rth in the thickness direction of the substrate satisfy the following ranges; 20 nm≤Ro≤95 nm, 70 nm<Rth≤400 nm. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
