| 摘要 |
<p>A polymer-dispersed liquid-crystal electrooptical device including a liquid crystal-polymer composite layer (7) in which a liquid crystal (7A) and a polymer (7B) are dispersed in different phases and the liquid crystal and the polymer are oriented in the same direction when no electric field is applied; and electrode structures (3, 4) which are formed on both surfaces of the liquid crystal polymer composite layer, for orienting the liquid crystal in accordance with the electric field by applying the electric field to the liquid crystal polymer composite layer so that the liquid crystal polymer composite layer can scatter light. The above composite layer is formed by photo-polymerizing a precursor of the polymer dissolved in the liquid crystal containing an additive, which is a compound having a benzene ring of which at least one hydrogen atom is substituted by a hydroxyl group or a compound having hydroxybenzene ring as a skeletal structure, such as di-tert-butylhydroquinone. The additive improves an initial reflection ratio, a reflection ratio after aging under normal operating conditions and contrast in comparison with the case where the additive is not added.</p> |
