Reset device

Abstract

The embodiment of the invention provides a reset device, an array substrate grid electrode driver and a liquid crystal device. The reset device comprises a first thin film transistor, a second thin film transistor and a compensation module. The first thin film transistor is used for outputting reset signals from a drain electrode. A grid electrode of the second thin film transistor is used for receiving output signals from the grid electrode driver, a drain electrode of the second thin film transistor is connected with the drain electrode of the first thin film transistor, and a source electrode of the second thin film transistor is grounded. The compensation module is used for compensating for threshold voltage of the first thin film transistor and is provided with a first input end, a second input end, a first output end and a second output end. The first input end receives first clock signals, the second input end receives second cloth signals, the first output end is connected with a grid electrode of the first thin film transistor, and the second output end is connected with a source electrode of the first thin film transistor. The first clock signals and the second clock signals have the difference of a half cycle, and the lasting time of a high level is shorter than that of a lower level.

Description

technical field [0001] The present invention relates to an array substrate gate drive (GateOnArray, GOA for short) technology, in particular, 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 driving circuit u...

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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