Common electrode driving method, common electrode driving circuit and liquid crystal display

A common electrode driving circuit, comprising:

• a common electrode signal output terminal for inputting the first common electrode signal to each row of pixels, and inputting the second common electrode signal to the common electrode,
• wherein the first common electrode signal and the gate signal applied to the corresponding row of pixels are transited synchronously and a polarity of a difference between a level of the first common electrode signal after the transition and a level of the first common electrode signal before transition is opposite to a polarity of a difference between a level of the gate signal applied to the corresponding row of pixels after the transition and a level of the gate signal applied to the corresponding row of pixels before transition,
• wherein the driving signal generation circuit comprises:
• a first driving signal generation unit for generating the second common electrode signal;
• and
• a second driving signal generation unit for generating the first common electrode signal by generating a transition timing signal and superposing the transition timing signal on the second common electrode signal generated by the first driving signal generation unit.

A liquid crystal display, comprising:

• a liquid crystal panel;
• and
• a driver for driving the liquid crystal panel,
• wherein the liquid crystal panel is formed by assembling an array substrate and a color-filter substrate with a liquid crystal layer filled therebetween, the driver comprising a gate driver, a data driver and a common electrode driver,
• wherein the common electrode driver is used for generating a first common electrode signal to be applied to a storage electrode line of each row of pixels on the array substrate, and a second common electrode signal to be applied to a common electrode forming a liquid crystal capacitance with pixel electrodes of each row of pixels on the array substrate, and inputting the generated first common electrode signal to each row of pixels and inputting the generated second common electrode signal to the common electrode, and
• wherein the first common electrode signal is opposite to a gate signal applied to gate electrodes in the corresponding row of pixels in terms of transition timing,
• wherein the first common electrode signal and the gate signal applied to the corresponding row of pixels are transited synchronously and a polarity of a difference between a level of the first common electrode signal after the transition and a level of the first common electrode signal before transition is opposite to a polarity of a difference between a level of the gate signal applied to the corresponding row of pixels after the transition and a level of the gate signal applied to the corresponding row of pixels before transition,
• wherein the common electrode driver, comprises:
• a first driving signal generation unit for generating the second common electrode signal;
• and
• a second driving signal generation unit for generating the first common electrode signal by generating a transition timing signal and superposing the transition timing signal on the second common electrode signal generated by the first driving signal generation unit.