LCD三基色光谱特性的研究

用分光光度计测量TB3639型液晶光阀在电压和频率两种驱动方式下的电光特性关系曲线，分析在这两种驱动方式下液晶对三基色的透射率变化情况；结果表明，三基色在两种驱动方式下，其透射率的变化并不一致，显示的图像会有一些偏色，这对显示质量的影响较大。在电压驱动方式下，随着电压变化，液晶对三基色透射率变化的不一致性更为显著，差值最大为11％，最小为0％。在频率驱动方式下，透射率差值相对较小，差值最大为4％，最小为2.5％，三基色透射率变化有更好的一致性。以此作为基础，对颜色进行一定的校正和补偿，以获得精确的色调和色饱和，便于进一步研究改善液晶显示性能。

Study of LCD Tricolor Spectrum Characteristic

The electro-optical characteristic of TB3639 liquid crystal light valve under both voltage-drive and frequency-drive modes was measured using spectrophotometer, and the change in tricolor transmissivity with the two methods was analyzed. The result shows that the changes in tricolor transmissivity with these two methods are not identical, and color cast will appear, which will influence display quality. The change in tricolor transmissivity becomes more obvious with the changes in voltage in voltage-drive mode, in which the maximum difference is 11% and the minimum is 0. The change in tricolor transmissivity has better uniformity in frequency-drive mode and the difference of transmissivity is relatively small with the maximum difference of 4% and the minimum of 2. 5. The color should be adjusted and compensated in order to get exact hue and color saturation, and this will held to study further for improving the performance of liauid crystal disolav.