Light wave propagation in liquid crystal devices with in-plane-switching electrodes

摘要

Liquid Crystal devices with in-plane switching electrodes(IPS-LCD) are superior to twisted nematic(TN) ones in their wider viewing angle, but show the serious color shift with viewing angle. In order to evaluate such effects numerically, light wave propagation within IPS-LCD is studied using a two-dimensional finite-difference time-domain(FDTD) method, where computational space termination is provided by a combination of the uniaxial perfectly matched layer and periodic boundary conditions. It is found that the color shift effects are mainly due to the asymmetrical profile of liquid crystal directors above the switching electrodes.