Polymer-dispersed cholesteric liquid crystals

Peter P. Crooker; H.-S. Kitzerow; F. Xu

doi:10.1117/12.172123

4 April 1994 Polymer-dispersed cholesteric liquid crystals

Peter P. Crooker, H.-S. Kitzerow, F. Xu

Proceedings Volume 2175, Liquid Crystal Materials, Devices, and Applications III; (1994) https://doi.org/10.1117/12.172123
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

Abstract

We describe recent progress on the polymer-dispersed cholesteric liquid crystal display. The display utilizes droplets of chiral liquid crystal with negative dielectric anisotropy in a polymer film. In zero electric field, the droplets take on the Frank-Pryce spherulitic texture which weakly scatters light. When a field is applied, the Frank-Pryce texture reverts continuously to a planar texture beginning from the center of the drop, resulting in a field-controllable reflectivity over a wavelength band dictated by the cholesteric pitch and the drop size. Results showing response times and reflection spectra for thermally-cured and UV-cured displays will be presented.

Citation Download Citation

Peter P. Crooker, H.-S. Kitzerow, and F. Xu "Polymer-dispersed cholesteric liquid crystals", Proc. SPIE 2175, Liquid Crystal Materials, Devices, and Applications III, (4 April 1994); https://doi.org/10.1117/12.172123

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