Liquid crystal display device and driving method thereof

Abstract

The embodiment of the invention discloses a liquid crystal display device and a driving method thereof. The liquid crystal display device includes a gate driver, a source driver, a time sequence controller and a display panel; the time sequence controller is used for outputting first control signals to the gate driver and outputting second control signals to the source driver; the gate driver is used for outputting gate driving signals to gate lines according to the first control signals; the source driver is used for outputting data driving signals to data lines respectively according to the second control signals when the gate driver outputs the gate driving signals to the gate lines; and the source driver controls polarity of the data driving signals loaded on the data lines according to the second control signals so as to make the polarity of the data driving signals change for once every two frames of images. With the liquid crystal display device and the driving method thereof of the invention adopted, display quality can be improved.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to a liquid crystal display device and a driving method thereof. Background technique [0002] Liquid Crystal Display (LCD) has the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation, and relatively low manufacturing cost. It currently plays a leading role in the field of flat panel displays. It is widely used in desktop computers, palmtop computers, personal digital assistants (Personal Digital Assistant, PDA), portable phones, TV boxes and other office automation and audio-visual equipment. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of an existing liquid crystal display device. The existing liquid crystal display device generally includes a gate driver 11, a source driver 12, and a display panel 14. Wherein, the display panel 14 is provided with a plurality of gate lines G1-Gn connecte...

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Problems solved by technology

[0005] In the process of converting the above image a into image b, the positive and negative polarity of the data driving signal output by the source driver to the data line changes (from positive polarity to negative polarity, or from negative polarity to positive polarity), That is, the polarity conversion of each pixel unit, the conversion of image a into image b requires recharging the liquid crystal capacitor and storage capacitor of the pixel unit, and the charging time of a pixel unit is T=1 / (G*F ), wherein, G is the number of gate lines, and F is the frequency of the display device. However, because the resolution of the existing liquid crystal display device is getting higher and higher, and it is often necessary to display pictures at a high frequency, the charging of the above-mentioned pixel unit It can be seen from the time formula that the charging time of each pixel unit will be shortened, which will cause insufficient charging of the pixel unit and cause abnormal display of the screen, thereby affecting the display quality of the display device

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