It is demonstrated that the reflective properties and bistability of cholesteric liquid crystals can be controlled by proper surface treatment and dispersed polymers. Dispersing a polymer in the liquid crystal or using a cell with an inhomogeneous surface anchoring creates permanent defects which result in long-term bistability, high contrast at large viewing angles, and gray scale. The wide-angle, reflective feature makes cholesteric materials suitable for displays without backlights and bistability provides flicker-free operation.
Journal of Applied Physics
Copyright 1994 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 76, 1331 (1994) and may be found at http://dx.doi.org/10.1063/1.358518
Yang, Deng-Ke; West, John L; Chien, Liang-Chy; Doane, J. William (1994). Control of Reflectivity and Bistability in Displays Using Cholesteric Liquid-Crystals. Journal of Applied Physics 76(2) 1331-1333. doi: 10.1063/1.358518. Retrieved from https://oaks.kent.edu/cpippubs/146