[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 help to study further for improving the performance of liquid crystal display.