| 摘要 |
PURPOSE:To eliminate the secular deterioration of resolution and to store and delete information with a single light source by providing specific high polymer film adjacent to a liquid crystal layer, forming a pattern with light to be reversively deleted by heating. CONSTITUTION:A high polymer film 2 composed of polyacrylate, polymethacrylate, polyvinyl acetal, polyvinyl ethel, or polysiloxane with a group represented by a formula I on side chain is provided adjacent to a liquid crystal layer 3. The pattern is formed with the light, and the formed pattern is reversively deleted by heating. In the formula I, R is alkyl group, alkoxy group or alkylamino group. A is polymethylene group or polymethylene group where one part of the methylene group is replaced by the formula I, II, III, or IV. |
