Abstract Conventional color electronic books and commercial advertising displays typically employ multilayer liquid crystal structures, in which light reflection and transmission are controlled to generate color images. In this study, a novel reflective bistable cholesteric liquid crystal display device was developed to simplify fabrication and increase image sharpness. The fabricated dual-frequency bistable liquid crystal device exhibits stable opaque focal conic states and transparent planar states after a single switching cycle, and no additional energy is required to maintain either state. These results demonstrate the significant potential of dual-frequency bistable liquid crystal devices for energy-efficient smart windows, electronic books, and optical components, providing new directions for the development of future energy-saving technologies.
Kuo et al. (Thu,) studied this question.