| 摘要 |
<p>A liquid crystal optical shutter comprising two sheets of electrically conductive substrates and, supported therebetween, an optical shutter layer, characterized in that (1) the optical shutter layer comprises 5 to 20 wt. % of a transparent polymer component and 95 to 80 wt. % of a liquid crystal component, (2) the liquid crystal component comprises a cholesteric liquid crystal , a chiral smectic C liquid crystal and a nematic liquid crystal, the total amount of the cholesteric liquid crystal and the chiral smectic C liquid crystal taking account for 0.05 to 10 wt. % of that of the liquid crystal component, and (3) the optical shutter layer has a particle structure formed by covering the liquid crystal component with a transparent polymer thin film comprising the transparent polymer component. The liquid crystal optical shutter requires no polarizing plates and is energy-saving since it exhibits excellent characteristics even under a low voltage.</p> |
