Three order-driven type array substrate line driving circuit

Abstract

The invention provides a three order-driven type array substrate line driving circuit, which comprises a plurality of stages of array substrate line driving units, wherein the array substrate line driving units are connected in stages, the n-th array substrate line driving unit of the array substrate line driving circuit is provided with a clock signal input terminal, a (n-1)th-stage signal input terminal, a (n+1)th-stage signal input terminal, a (n+3)th-stage signal input terminal, a first low level input end, a second low level input terminal, a signal output terminal, a pull-up driving unit (32), a pull-up unit (34), a first pull-down unit (36) and a second pull-down unit (38). The three order-driven type array substrate line driving circuit has the advantages that the production cost of liquid crystal display panels is favorably reduced, and narrow-edge frameworks are realized; by adopting the three-order array substrate line driving, the influence on a thin film transistor liquid crystal display device by the feed-through voltage which is generated by a data line and a grid line is effectively eliminated; the displaying quality is improved.

Description

technical field [0001] The present invention relates to the field of liquid crystal display manufacture, in particular to a three-level drive array substrate row drive circuit. Background technique [0002] Liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as thin body, power saving, and no radiation, and has been widely used. With the development of the liquid crystal display industry, its required performance is getting higher and higher, such as High resolution, high brightness, wide viewing angle, low power consumption and other performances, and the corresponding technologies are also continuously being developed. Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates, and to control th...

AI Technical Summary

Problems solved by technology

But due to the liquid crystal capacitance C lc It is not a fixed parameter. It is not easy to achieve the goal of improving the image quality by adjusting the voltage on the common electrode. Therefore, there is a three-stage drive design. It is expected that the feed-through voltage will be given to the compensate back

The basic principle of the third-order drive is to use the storage capacitor C s The resulting feedthrough voltage is compensated via the parasitic capacitance C gd The resulting feedthrough voltage, that is, because of the need to utilize the storage capacitor C s to compensate, so the third-order drive method can only be used in panel architectures for C s on gate (storage capacitor C s The structure of one electrode and the common potential of the gate line)

However, with the third-order driving method, the liquid crystal capacitor C lc The effect is gone

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