Multi-domain LCD device and drive method threof

Abstract

The invention discloses a multidomain liquid crystal device and a drive method thereof. The multidomain liquid crystal device comprises an array baseboard, a color film baseboard and a liquid crystal layer stuffed between the two baseboards, wherein the array baseboard is formed with a plurality of horizontal scan signal lines and vertical data signal lines, the crosses between the scan signal lines and the data signal lines are provided with sub pixels in a matrix form, each sub pixel is divided into a first display area and a second display area whose charge and discharge are controlled by two film transistor respectively, the two film transistors are driven by present row scan signal lines. The invention is characterized in that the storage capacitance of the first display area is composed of a pixel electrode and a next row scan signal line, and the storage capacitance of the second display area is composed of a pixel electrode and a last scan signal line. The multidomain liquid crystal device and its drive method can improve the open rate of liquid crystal panels and reduce the short circuit rate of the data signal lines.

Description

technical field [0001] The patent of the present invention relates to a liquid crystal display device and its driving method, in particular to a multi-domain liquid crystal display device and its driving method. Background technique [0002] Flat-panel display technology has replaced CRT as the mainstream technology in the image display industry. Among them, liquid crystal display (LCD) occupies most of the market for flat-panel display devices due to its advantages of power saving, small footprint, and portability. Correspondingly, LCD displays The performance requirements of devices are also getting higher and higher, including wide viewing angles, low color shift, and high-definition image quality. In wide viewing angle technology, compensation films are generally used for twisted nematic (TN), and vertical alignment (Vertical Aligned, VA) mode often adopts multi-domain orientation of LC molecules. In this case, different viewing angles will still appear. Larger color ca...

AI Technical Summary

Problems solved by technology

The existing VA mode multi-domain display driving technologies include two-transistor type (TT-type), capacitive coupling type (CC-type), Cs common electrode potential fluctuation, etc. figure 2 The Gamma curve of the CC-type VA mode is shown, and the color shift is significantly lower than that of the traditional VA mode at a viewing angle of 60 degrees, but the CC-type has higher requirements for the control of the coupling capacitor; the TT-type requires two scanning signal lines Or two data signal lines control the same sub-pixel, which increases the driving cost; in addition, the potential fluctuation mode of the common electrode line of the storage capacitor and the CC-type and TT-type all require a special common electrode line as the common line of the storage capacitor. rate is relatively small

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