LIQUID CRYSTAL DISPLAY AND DRIVING METHOD THEREOF

摘要

A liquid crystal display includes a gate driver, a data driver and a pixel matrix. The gate driver is for outputting a plurality of gate signals successively. The data driver is for providing a plurality of data signals. The pixel matrix includes a number of pixels. Each pixel includes a first sub-pixel, a second sub-pixel and a voltage coupling device. The voltage coupling device is coupled between the first sub-pixel and the second sub-pixel such that pixel voltages of the first sub-pixel and the second sub-pixel are different and have relevant variation.

主权项

1. A method for driving a liquid crystal display, the liquid crystal display comprising a gate driver, a data driver and a plurality of rows of pixels, the gate driver outputting a plurality of gate signals, the data driver outputting a plurality of data signals, each of the pixels comprising a first sub-pixel and a second sub-pixel, the first sub-pixel having a first switch device, a first pixel electrode, a first common electrode and a first electrode, the first pixel electrode and the first common electrode forming a first storage capacitor, the second sub-pixel having a second switch device, a second pixel electrode, a second common electrode and a second electrode, the second pixel electrode and the second common electrode forming a second storage capacitor, the method comprising:
(a) enabling a row of pixels according to the corresponding gate signal to turn on the first switch device and the second switch device of each pixel in the row of pixels, inputting the corresponding data signal to the first pixel electrode and the second pixel electrode and respectively providing a first voltage and a second voltage to the first electrodes and the second electrodes in the row of pixels; and (b) after the gate signal is stopped outputting for a period of time, changing the first voltage of the first electrode of each pixel in the row of pixels to cause a common voltage of the corresponding second common electrode to be changed through a voltage coupling device between the corresponding first sub-pixel and second sub-pixel and adjusting voltages of the corresponding first pixel electrode and the second pixel electrode such that a pixel voltage of the first pixel electrode is not equal to a pixel voltage of the second pixel electrode, wherein a voltage variation ΔVp1 of the pixel voltage of the first pixel electrode, a voltage variation ΔVp2 of the pixel voltage of the second pixel electrode, a voltage variation ΔV1 of the first voltage and a voltage variation ΔV2 of the second common electrode have the following relationship: ΔVp1=c1*ΔV1+c2*ΔV2; ΔVp2=c3*ΔV1+c4*ΔV2, and constants c1 and c2 are not both zero, constants c3 and c4 are not both zero.