Electro-Optical Analysis of Super-IPS LCDs by Using 3-D Molecular Director Simulation of TFT-LCDs

초록

In this study, we performed a three-dimensional computer simulation for the electro-optical characteristics of a super in-plane switching liquid crystal displays(Super IPS-LCDs) in a unit pixel of TFT-LCDs, for the first time, and compared the results with experiments. The dynamic equation of continuum theory for liquid crystals is based on a tensorial formulation. As a numerical technique, we used a finite difference method(FDM) suitable for highly nonlinear equations. As a result, we confirmed that the simulation results such as a transmission profile over a pixel and an average transmittance as a function of applied voltage showed good agreement with the experimental results. We also revealed that Super IPS-LCDs show good wide viewing angle characteristics with contrast ratio of more than 50:1 up to a polar angle of ±90° both in the horizontal and the vertical directions.