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Proceedings Paper

Waveform parameters effect on electro-optic properties of polymer-dispersed liquid-crystal light shutters
Author(s): Chi-Chien Chen; Jang-Jeng Liang; Wen Chang Chiang; Wei-Yu Lee; Jin-Shin Lin
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Paper Abstract

Electro-optic behaviors of polymer-dispersed liquid crystal (PDLC) films are not only dependent on materials and environments, but also on the electric field generated by driving voltage waveforms. In this paper, mathematical models for the relative permittivity, rise time and fall time are proposed and simulated. In addition, PDLC films composed of nematic liquid crystal and methyl methacrylate (MMA) are prepared. Light shutters are made from PDLC films with three dimensional polymer matrix. Electro-optic properties are measured using gated rectangular waveforms, and those results show good agreements with simulated results. Finally, the effects of waveform parameters on the rise time, fall time and contrast ratio are discussed.

Paper Details

Date Published: 27 October 1992
PDF: 11 pages
Proc. SPIE 1815, Display Technologies, (27 October 1992); doi: 10.1117/12.131322
Show Author Affiliations
Chi-Chien Chen, Chunghwa Picture Tubes, Ltd. (Taiwan)
Jang-Jeng Liang, Chunghwa Picture Tubes, Ltd. (Taiwan)
Wen Chang Chiang, Chunghwa Picture Tubes, Ltd. (Taiwan)
Wei-Yu Lee, Tatung Institute of Technology (Taiwan)
Jin-Shin Lin, Tatung Institute of Technology (Taiwan)

Published in SPIE Proceedings Vol. 1815:
Display Technologies
Shu-Hsia Chen; Shin-Tson Wu, Editor(s)

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