| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated optical film which comprises a polarizing layer (a) selectively reflecting visible rays and composed of a cholesteric liquid crystal layer and an optical layer (b) having an optical function different from that of (a) and composed of at least a layer of a liquid crystal layer, is excellent in durability and is capable of being thinned and a liquid crystal display device equipped with the same. SOLUTION: The optical film is manufactured by forming a PVA(polyvinyl alcohol) alignment layer with 0.1 μm thickness on a triacetyl cellulose film, by treating the layer with rubbing, subsequently by aligning an acrylic side chain nematic liquid crystal polymer with 0.5 μm thickness, having the same main component as a cholesteric liquid crystal polymer to be laminated afterwards, so as to make 1/4 phase difference layer, and by forming a layer composed of three layers of acrylic side chain cholesteric liquid crystal polymers with 700 nm, 550 nm and 400 nm central wavelengths of selective reflection respectively successively formed and aligned thereon. |
