Although reflective bistable twisted nematic (RBTN) displays have potential in low-power-consumption applications, to achieve the optimum conditions for both bistable states simultaneously remains a challenge. We use a geometrical method based on the Poincaré sphere representation to obtain the optimum conditions that can simultaneously satisfy both bistable states for a RBTN structure. With this method, the optimum conditions can be obtained analytically and the operation modes can be clearly visualized and better understood.
© 1999 Optical Society of America
(120.2040) Instrumentation, measurement, and metrology : Displays
(230.3720) Optical devices : Liquid-crystal devices
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization
Zhizhong Zhuang, Young Jin Kim, and J. S. Patel, "Parameter optimization for a reflective bistable twisted nematic display by use of the Poincar sphereé method," Opt. Lett. 24, 1166-1168 (1999)