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Proceedings Paper

Dual-frequency cholesteric liquid crystal reflective display
Author(s): Ming Xu; Deng Ke Yang
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Paper Abstract

We developed a bistable cholesteric reflective display using a dual frequency cholesteric liquid crystal. When a high frequency voltage is applied to the matrices, it exhibits a negative dielectric anisotropy and is switched to the planar texture which is Bragg reflecting. When a low frequency voltage is applied to the materials, it exhibits a positive dielectric anisotropy and is switched to the focal conic texture which is weakly scattering. Both the planar texture and the focal conic texture are stable at zero field, and therefore the material can be used to make multiplexed displays with passive matrix. This new display can be directly switched between the planar texture and the focal conic texture, and therefore is suitable for displaying dynamic images.

Paper Details

Date Published: 26 March 1999
PDF: 6 pages
Proc. SPIE 3635, Liquid Crystal Materials, Devices, and Applications VII, (26 March 1999); doi: 10.1117/12.343858
Show Author Affiliations
Ming Xu, Kent State Univ. (United States)
Deng Ke Yang, Kent State Univ. (United States)


Published in SPIE Proceedings Vol. 3635:
Liquid Crystal Materials, Devices, and Applications VII
Ranganathan Shashidhar, Editor(s)

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