A Reflective Full-color TFT-LCD with a Single Polarizer

Abstract

Reflective color LCDs are suitable for mobile outdoor use because of their low power consumption, light weight, compact size and good legibility under the sunlight. However, conventional reflective color LCDs have poor picture qualities and performances compared with transmissive one. In this time, We have developed a reflective full color TFT-LCD with a single polarizer using low temperature poly-Si TFTs with high resolution and large visible area. We have optimized the optical construction of normally White(NW)mode TN cell with a single polarizer and designed the pixel structure to obtain high aperture ratio based on low temperature poly-Si TFTs. We have achieved high contrast of 1:15, good achromaticity and low driving voltage below 3.3 volts.