Shift register and array substrate grid driving device

Abstract

The invention discloses a shift register and a grid driving device, which are used for eliminating noise of an output terminal of the shift register and improving the working stability of the shift register. The shift register provided by the invention comprises an input module, a pull-up module, a reset module, a first pull-down control module, a second pull-down control module and a pull-down module, wherein the input module is used for supplying input signal voltage to a pull-up node, which is an output node of the input module; the pull-up module is used for storing the input signal voltage and supplying first clock signal to an output terminal; the reset module is used for supplying power source cathode voltage to the pull-up node; the first pull-down control module is used for supplying the power source cathode voltage to a first pull-down node; the second pull-down control module is used for supplying the power source cathode voltage to a second pull-down node; and the pull-down module is used for supplying the power source cathode voltage to the pull-up node and the output terminal.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display driving, in particular to a shift register, a driving method thereof, and a gate driving device. Background technique [0002] Flat-panel displays have been vigorously promoted because of their ultra-thin energy saving. Shift registers are used in most flat-panel displays. By integrating the gate drive device into the liquid crystal panel (gate on array, GOA) method, the shift register can save the gate drive IC and reduce a manufacturing process. , so not only the production cost of the flat panel display is reduced, but also the production cycle is shortened to a certain extent. Therefore, GOA technology has been widely used in flat panel display manufacturing in recent years. The service life of GOA and its output stability have always been a concern in the design of GOA. [0003] attached figure 1 It is the most basic unit of GOA, which is composed of 4 thin film transistors...

AI Technical Summary

Problems solved by technology

[0003] attached figure 1 It is the most basic unit of GOA, which is composed of 4 thin film transistors and 1 capacitor. In practical applications, the T2 transistor of this GOA unit will cause noise at the output terminal OUTPUT due to the influence of the coupling voltage generated by the first clock signal CLK on it. and cannot work stably for a long time

At present, many GOA patents have given some solutions to the above problems and can basically solve the above problems, but there is no GOA solution that can completely solve the noise and poor stability of the output.

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