Shift register and grid line drive device thereof

Abstract

The invention relates to a shift register and a grid line drive device thereof. The shift register comprises a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a first capacitor, a discharge module and a compensation module. A gird of the first thin film transistor is connected with a first node, a source electrode of the first thin film transistor is connected with a clock signal end, and a drain electrode of the first thin film transistor is connected with a same-level output end; a grid of the second thin film transistor is connected with a second node, a source electrode of the second thin film transistor is connected with the same-level output end, and a drain electrode of the second thin film transistor is connected with a low level signal end; a grid of the third thin film transistor is connected with the first node, a source electrode of the third thin film transistor is connected with the low level signal end, and a drain electrode of the third thin film transistor is connected with the second node; a grid of the fourth thin film transistor is connected with the second node, a source electrode of the fourth thin film transistor is connected with the low level signal end, and a drain electrode of the fourth thin film transistor is connected with the first node; the first capacitor is connected between the clock signal end and the second node; the discharge module is connected between the clock signal end and the same-level output end; and the compensation module is connected between the first node and the low level signal end. The invention has the advantages of low cost, low power consumption, long service life, high stability, strong interference resistance, small delay, and the like.

Description

technical field [0001] The invention relates to a driving device of a liquid crystal display, in particular to a shift register and a gate line driving device thereof. Background technique [0002] Liquid crystal display (LCD) has the characteristics of light weight, thin thickness and low power consumption, and is widely used in devices such as mobile phones, monitors, and televisions. The liquid crystal display uses an electric field to control the deflection of the liquid crystal, so as to control the transmission of light to form a display screen. The liquid crystal display is mainly composed of a pixel matrix arranged in two directions, horizontal and vertical. The horizontal part of the pixel array is composed of grid lines, and consists of The shift register provides gate line driving signals, and the vertical part of the pixel array is composed of data lines, which are used to apply data signals to the pixel array, and the required electric field is formed by applyin...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a shift register and its gate line driving device, which can effectively solve the technical defects of the prior art such as unstable operation and short life due to long-term continuous application of high voltage to the gate of the thin film transistor.

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