Waveform parameters effect on electro-optic properties of polymer-dispersed liquid-crystal light shutters

Chi-Chien Chen; Jang-Jeng Liang; Wen Chang Chiang; Wei-Yu Lee; Jin-Shin Lin

doi:10.1117/12.131322

27 October 1992 Waveform parameters effect on electro-optic properties of polymer-dispersed liquid-crystal light shutters

Chi-Chien Chen, Jang-Jeng Liang, Wen Chang Chiang, Wei-Yu Lee, Jin-Shin Lin

Author Affiliations +

Proceedings Volume 1815, Display Technologies; (1992) https://doi.org/10.1117/12.131322
Event: International Symposium on Optoelectronics in Computers, Communications, and Control, 1992, Hsinchu, Taiwan

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.

Citation Download Citation

Chi-Chien Chen, Jang-Jeng Liang, Wen Chang Chiang, Wei-Yu Lee, and Jin-Shin Lin "Waveform parameters effect on electro-optic properties of polymer-dispersed liquid-crystal light shutters", Proc. SPIE 1815, Display Technologies, (27 October 1992); https://doi.org/10.1117/12.131322

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