Grid driving circuit, display panel and display device

Abstract

The embodiment of the invention discloses a grid driving circuit, a display panel and a display device. The grid driving circuit is used on the display panel and characterized by comprising a signal generating circuit and at least one signal, wherein the signal generating circuit is used for generating a grid line driving signal for driving a grid line positioned in the display panel, and the at least one signal enables the driving signal to have cutting angle waveform. The grid driving circuit, the display panel and the display device provide a scheme for weakening the negative influence caused by RC delay from the perspective of a signal source.

Description

technical field [0001] The invention relates to the driving of a display panel, in particular to a grid driving circuit, a display panel and a display device. Background technique [0002] The display device is a flat panel display widely used at present. Compared with other display methods, it has the advantages of low power consumption, light weight, and no radiation. [0003] A display device generally includes an array substrate, a color filter substrate, and a liquid crystal layer filled between the array substrate and the color filter substrate. The display area on the array substrate includes a plurality of sub-pixel areas, and each sub-pixel area is generally formed by crossing and surrounding two gate lines (scanning lines) and two data lines. [0004] A thin film transistor serving as a switching device and a pixel electrode are disposed inside the sub-pixel area. By controlling the voltage applied to the common electrode and / or the pixel electrode on the color f...

AI Technical Summary

Problems solved by technology

And this RC delay will affect the signal transmission

[0006] like figure 1 As shown, it is assumed that the left side is close to the gate drive circuit, Von is the voltage corresponding to the TFT conduction, from figure 1 It can be found that at the end close to the gate drive circuit, the gate drive signal is basically not distorted, but at the end far away from the gate drive circuit, the distortion of the gate drive signal is very serious, and this distortion will lead to The conduction time of the TFT is different, which leads to inconsistent charging time of the pixel electrode, which has an adverse effect on the display

[0007] In the prior art, the adverse effects of RC delay are generally reduced by improving the material, shape, and size of the grid lines, such as using low-resistivity materials, increasing the width and thickness of the grid lines to reduce resistance, reduce The overlapping area of ​​gate lines and other conductive layers, etc., but these methods will undoubtedly affect the manufacturing process of the display panel, increasing the complexity and cost of the process

Images