Optical characteristics of polymer/liquid-crystal composite illuminated by guided light

Abstract

Electro-optical characteristics of PDLC illuminated by directly attached light-guide, which is expected for direct-viewing displays with high optical efficiency, were studied. Comparing to usual illumination method, in which the incident angle is almost normal to the panel, the saturation voltage was higher for light-guide illumination. This result is due to the observation direction is almost perpendicular to the rays of the illumination.