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  • Title: Bistable cholesteric liquid crystal light shutter with multielectrode driving.
    Author: Li CC, Tseng HY, Pai TW, Wu YC, Hsu WH, Jau HC, Chen CW, Lin TH.
    Journal: Appl Opt; 2014 Aug 01; 53(22):E33-7. PubMed ID: 25090351.
    Abstract:
    An electrically activated bistable light shutter that exploits polymer-stabilized cholesteric liquid crystal film was developed. Under double-sided three-terminal electrode driving, the device can be bistable and switched between focal conic and homeotropic textures with a uniform in-plane and vertical electrical field. The transparent state with a transmittance of 80% and the opaque/scattering state with a transmittance of 13% can be realized without any optical compensation film, and each can be simply switched to the other by applying a pulse voltage. Also, gray-scale selection can be performed by varying the applied voltage. The designed energy-saving bistable light shutter can be utilized to preserve privacy and control illumination and the flow of energy.
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