Pixel driving method

Abstract

According to a pixel driving method, in the enabling process of the gate driving voltage of pixels of a display screen, the gradually increased gate driving voltage is provided in the charging processof a first sub-pixel, a second sub-pixel and a third sub-pixel. Different from the prior art, by adjusting the on-state current of the Gate and by performing special waveform design, the charging rates of the R / G / B sub-pixels can be basically consistent, and the charging rate of the G / B pixels can be improved without modifying the manufacturing process of the Demux liquid crystal display screen,so that the display effect is better, and the cost is saved.

Description

Technical field [0001] The present invention relates to the field of pixel driving, in particular to the design of a pixel driving method. Background technique [0002] Due to the timing characteristics of the Demux LCD screen itself, the charging rate of each sub-pixel may vary or the charging may be insufficient. Here like figure 1 As shown, figure 1 We can see that in the prior art, the falling edge of Demux_R to the falling edge of Gate is the time for the Data Line to charge the Pixel. At this time, the data transmitted by the Data Line is the data of the R sub-pixel, and the charging time is t1; Demux_G The falling edge of Demux_B to the falling edge of Gate is the time for the Data Line to charge the Pixel. At this time, the data sent by the Data Line is the data of the G sub-pixel, and the charging time is t2; the falling edge of Demux_B to the falling edge of the Gate is the Data Line direction Pixel charging time. At this time, the data transmitted by Data Line is the ...

AI Technical Summary

Problems solved by technology

[0002] Due to the timing characteristics of the Demux LCD itself, the charging rate of each sub-pixel will be different or the charging rate will be insufficient.

here as figure 1 as shown, figure 1 We can see that in the prior art, the falling edge of Demux_R to the falling edge of Gate is the time for the Data Line to charge the Pixel. At this time, the data transmitted by the Data Line is the data of the R sub-pixel, and the charging time is t1; Demux_G The falling edge of Demux_B to the falling edge of Gate is the time for the Data Line to charge the Pixel. At this time, the data transmitted by the Data Line is the data of the G sub-pixel, and the charging time is t2; the falling edge of Demux_B to the falling edge of the Gate is the time for the Data Line to The charging time of Pixel. At this time, the data transmitted by Data Line is the data of sub-pixel B, and the charging time is t3; since the High voltage of Gate remains unchanged, the charging rate of Data Line to Pixel is only the same as that of Dta Line to Pixel It can be seen from the figure that t1>t2>t3, that is, the charging rate of the Data Line to the R sub-pixel is greater than that of the G sub-pixel, and the charging rate of the Data Line to the G sub-pixel is greater than that of the B sub-pixel, and because the B sub-pixel itself The natural brightness of the sub-pixel is lower than that of R / G, which will cause abnormal display on the Demux LCD

For example, in a white screen, the R / G / B sub-pixels were originally lit together, but now due to the insufficient charging rate of the B sub-pixel, the charging rate of the R / G sub-pixel is high and bright enough, while the charging rate of the B sub-pixel is too low and the brightness is too high. low, the entire white screen will turn yellow (green plus red = yellow); if the G sub-pixel is insufficiently charged, the brightness of the entire LCD screen will drop, this is because the human eye is more sensitive to green, that is, the G sub-pixel is more sensitive to the liquid crystal. The brightness contribution of the display is greater than that of R / B

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