Liquid crystal display device and driving method thereof

Abstract

The invention relates to a liquid crystal display device which comprises a plurality of scanning lines, a plurality of data lines and a plurality of pixel units defined by minimum areas and formed by the scanning lines and the data lines, wherein each pixel unit comprises a first sub-pixel unit and a second sub-pixel unit; the first sub-pixel unit comprises a first thin film transistor and a firstpixel electrode; the second sub-pixel unit comprises a second thin film transistor, a coupling capacitor and a second pixel electrode; grids of the first thin film transistors and the second thin film transistors are respectively connected with a scanning line, and source electrodes are respectively connected with a data line; drain electrodes of the first thin film transistors are connected withthe first pixel electrodes and connected with the second pixel electrodes through the coupling capacitors; and drain electrodes of the second thin film transistors are connected with the second pixelelectrodes and connected with the first pixel electrodes through the coupling capacitors. The liquid crystal display device and a driving method thereof can eliminate the coupling interference of thecoupling capacitors so as to improve the image display quality.

Description

Technical field [0001] The invention relates to a liquid crystal display device and a driving method thereof. Background technique [0002] The liquid crystal in the liquid crystal display device itself does not have light-emitting characteristics, and it uses an electric field to control the twisting of liquid crystal molecules to achieve the passage or non-passing of light, thereby achieving the purpose of display. The liquid crystal driving mode of the traditional liquid crystal display device is a twisted line mode, but its viewing angle range is relatively narrow, that is, when viewing the picture from different angles, different display effects will be observed. In order to solve the problem of the relatively narrow viewing angle of the twisted line mode liquid crystal display device, the industry proposes a four-domain vertical alignment type liquid crystal display device. The "<" shaped protrusions and grooves divide each pixel unit into four regions, and the orientati...

AI Technical Summary

Problems solved by technology

[0014] In order to solve the problem that the coupling electricity of the liquid crystal display device in the prior art is prone to coupling interference and affect the image display quality, it is necessary to provide a liquid crystal display device that can eliminate the coupling interference of the coupling capacitance and improve the image display quality.

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