Patent ID: 7501210
Filing Date: 2009-03-10
Classification: G11B

Abstract:
1. A photo-responsive high-molecular compound comprising an aromatic ring in a main chain, a photo-responsive group that is geometrically isomerized by light radiation, and a liquid crystal linear mesogen group, wherein the photo-responsive group and the liquid crystal linear mesogen group are respectively bonded with the aromatic ring as side chains, the liquid crystal linear mesogen group contains a biphenyl skeleton, and the compound comprises a repeat unit represented by the following general formula (10): wherein R r is in a range from about 0.2 to about 0.95 and s is in a range from about 0.05 to about 0.8, and said photo-responsive high-molecular compound is present in a photosensitive layer having a thickness of 50 μm or more.