The Optical Characteristics of Liquid Crystal Display with Different Space Width
With decreasing the space width from 40 to 16 μm, the response time would be shorten about 10 ms. From gamma curve and D value, we can easily realize the color shift performance is improved with decreasing space width. The space means the distance from the edge of the bump to sht. As space width changing, contrast ratio and response time would be improved3-7. However, no one note image quality, i. e. color shift and gamma. The purpose of this paper is to discuss the relationship between the space width and optical characteristic. By proper adjusting the space width, the optical characteristic (RT and CR) and image quality can be improved significantly.The response time measurement under the different space width is showed in Tab. 1. The Tr means the raising time and Tr means the falling time. As can be seen in Tab. 1, with decreasing the space width from 40 to 16 um, the response time would be shorten about 10 ms. A schematic waveform for measuring the response time is showed in Fig. 1. Tf is no distinct difference with changing space width. But the slope of Tr would be significant diversity.The gamma curve and D value changed with various space widths are showed in Tab. 2 and Fig. 2 respectively. As can be seen in Fig. 2, the blue point is ideal gamma curve. So we can easily realize the color shift performance is improved with decreasing space width. The D value was used to evaluated the color shift performance which was proposed by Kim et al8. As can be seen in Tab.2, the D value for space = 16,25, 31 and 40 are 0.741, 0.752,0.761 and 0.763 respectively. According to the calculation result of D value, the better color shift performance for space = 16 can be realized.
Chen-Fu Mai Tzu-Chin Lin Kuei-Wei Huang Chun-HSiu Liu
TFT Business Unit, Chunghwa Picture Tubes, Taiwan, China
国际会议
上海
英文
1162-1163
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）