Ting-Jui Chang

19.1: LCD Visual Quality Analysis by Moving Picture Simulation

With simulation incorporated with pixel response and eye-trace integration, visual results of moving pictures on AMLCD were analyzed. We evaluated the effects of double edges due to overdriving and blinking backlight techniques in detail. Methods to prevent double edges were also explained.

52.1: Invited Paper: Advanced MVA III Technology for High‐Quality LCD TVs

An advanced MVA technology, AMVA III (AUO or Advanced MVA generation III) which is a protrusion-free technology has been developed. The AMVA III TFT-LCD panel has high optical transmittance (20% higher than conventional MVA), high static contrast ratio (>8000:1), fast response time, low color washout, and substantially free from motion blur. This advanced technology is newly launched for mass-production in LCD-TV.

Moving‐image simulation for high‐quality LCD TVs

— A simulation system incorporating pixel response and eye-trace integration was developed to evaluate the moving-image performance of high-quality LCD TVs. A simple formula was derived for moving-edge simulation, which can be used to evaluate the visual effects of arbitrary response waveforms. A model of exponential decay with dynamic time constants is proposed for the LC response to perform moving-image simulation. The model was used to evaluate the visual effects of various motion-blur-reduction techniques. Six different motion-blur-reduction techniques were evaluated in terms of their visual effects. Among them, three basic techniques show certain defects, which are further analyzed by simulation. The other three advanced techniques show excellent performance, and, therefore, are recommended for use in high-quality LCD TVs.