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Liquid crystal on silicon achieves the corresponding gray scale by outputting the corresponding voltage value. The gamma 2.2 curve is just complementary to the human eye's color sensitivity, that means, the human eye has the best viewing effect on the display device with gamma 2.2 curve. On the one hand, in order to fit the response curve of the display device better to the gamma 2.2 curve to improve the viewing effect, gamma value with analog correction can not meet the fitting requirements;on the other hand,under the condition of ensuring the low power consumption,it is more difficult for designers to redesign a higher precision DAC.Improving the display accuracy of silicon-based liquid crystal has become an important research direction.In this paper, the frame ratio control algorithm to improve the display accuracy of silicon-based liquid crystal is proposed. The experimental results show that, the display accuracy is 7 bit without processing,there will be a "ladder" curve segment in the gamma curve of silicon-based liquid crystal. After using the frame ratio control algorithm, the display accuracy is increased to 10 bit,the measured gamma curve eliminates the "ladder". Moreover, because the more frames are divided, the smoother curvature of measured gamma curve is, the higher display accuracy is. This conclusion proves that the frame ratio control algorithm can improve the display accuracy in silicon-based liquid crystal display, and make the image display effect finer and smoother, which has a wide range of application scenarios and value。
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