Effect of thickness on PDLC electro-optics

Robert B. Akins; John L. West

doi:10.1117/12.60396

15 June 1992 Effect of thickness on PDLC electro-optics

Robert B. Akins, John L. West

Proceedings Volume 1665, Liquid Crystal Materials, Devices, and Applications; (1992) https://doi.org/10.1117/12.60396
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

Liquid crystal/polymer dispersions have widely recognized promise as light modulators in projection displays for high definition video. Achieving switching voltages compatible with active matrix display drivers while maintaining good on-screen contrast remains an area of active material research. As the driving voltage depends linearly on the liquid crystal/polymer dispersion thickness, one simple method to lower driving voltage is to operate with thinner dispersions. This approach has a significant impact on contrast ratio. We report on the results of a study of the dependence of the driving voltage and contrast ratio as a function of thickness. For very thin samples the voltage does not decrease with thickness and the contrast is greatly reduced, indicating a clear limit to this approach.

Citation Download Citation

Robert B. Akins and John L. West "Effect of thickness on PDLC electro-optics", Proc. SPIE 1665, Liquid Crystal Materials, Devices, and Applications, (15 June 1992); https://doi.org/10.1117/12.60396

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