reset device

Abstract

Embodiments of the present invention provide a reset device, an array substrate gate driver, and a liquid crystal device. The reset device includes: a first thin film transistor for outputting a reset signal from a drain; a second thin film transistor whose gate receives an output signal from a gate drive circuit, and whose drain is connected to the drain of the first thin film transistor , the source is grounded; and a compensation module is used to compensate the threshold voltage of the first thin film transistor, which has a first input terminal, a second input terminal, a first output terminal and a second output terminal; wherein the first The input end receives a first clock signal, the second input end receives a second clock signal, the first output end is connected to the gate of the first thin film transistor, and the second output end is connected to the first thin film transistor. The source of the transistor is connected; wherein, the difference between the first clock signal and the second clock signal is 1 / 2 cycle, and the duration of the high level is shorter than the duration of the low level.

Description

technical field [0001] The present invention relates to an array substrate gate driving (Gate On Array, GOA for short) technology, and in particular, relates to a reset device used in a GOA circuit. Background technique [0002] In current liquid crystal devices, it is becoming more and more common to use a GOA circuit as a gate driving circuit. Generally, a GOA circuit may include one or more driving circuit units for providing gate signals and a reset circuit. The reset circuit provides a reset signal to the driving circuit unit, so that the driving circuit unit is reset in response to the reset signal, thereby realizing driving and refreshing of different rows. In addition, since the driving circuit unit is reset, the driving circuit unit is discharged, so the noise signal in the GOA circuit can be eliminated in real time. [0003] At present, the reset circuit can provide a reset signal based on a frame start signal (ie, an initial scan signal provided by an external d...

AI Technical Summary

Problems solved by technology

[0006] exist figure 1 In the shown reset circuit, for the thin film transistor M1, since the clock signal CLKB continuously provides a higher voltage to the gate of the thin film transistor M1, the threshold voltage of the thin film transistor M1 will drift greatly, while the thin film transistor The drift of the threshold voltage will affect the output characteristics of thin film transistors

In this case, after the reset circuit works for a long time, the reset signal Reset provided may be distorted, thereby affecting the discharge of the driving circuit unit and causing abnormal display of the liquid crystal device, etc.

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