Driving method and circuit for liquid-crystal displaying panel

Abstract

A circuit comprises multiple display unit group as each group includes multiple display unit, each display unit group is coupled to corresponding grid electrode and data electrode separately and its display unit is also coupled to the same grid electrode and data electrode. The method provides image signal to data electrode to make number of display unit group in which positive display unit is more than negative display unit be equal to number of display unit group in which negative display unit is more than positive display unit in the same grid electrode and provides scanning signal to grid electrode.

Description

technical field [0001] The present invention relates to a liquid crystal display panel driving circuit and a liquid crystal display, in particular to a data driving method applied to a liquid crystal display panel shared by data electrodes, and proposes a liquid crystal display panel driving circuit capable of eliminating cross-talk And a method for improving picture quality by using the driving circuit. Background technique [0002] FIG. 1 shows a schematic diagram of an equivalent circuit of a thin film transistor liquid crystal display panel (liquid crystal display panel, hereinafter referred to as LCD panel) and its peripheral driving circuits in the prior art. As shown in the figure, the LCD panel 1 is formed by interlacing data electrodes (indicated by D1, D2, ... Dm) and gate electrodes (indicated by G1, G2, ... Gn), and each group of interleaved data The electrodes and the gate electrodes can be used to control a display unit, for example, th...

AI Technical Summary

Problems solved by technology

[0009] In the above-mentioned driving method, although the display units are sequentially driven with opposite polarities, in fact, due to the change of the driving sequence, the adjacent display units are not driven sequentially, so it may be due to the positive polarity of the specific display unit group. The difference in the number of polarity display units and negative polarity display units is too large, which causes the common electrode voltage VCOM to be affected by capacitive coupling, resulting in the problem of display grayscale inaccuracy. As shown in Figure 3, the display units in each display unit group The polarities are all the same, so it will affect the level of the common electrode voltage VCOM and cause crosstalk. Therefore, it is necessary to make an appropriate specification for the driving polarity of LCD display panels that share the data electrodes of the display units in the same column.

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