Gate drive circuit and method and display device thereof

Abstract

Disclosed are a gate driving circuit and method, and a display device thereof, the gate driving circuit including a plurality of stages of gate driving units, the gate driving units including a firstdriving unit controlling a first node voltage and a second node voltage, and providing a first driving signal to a first gate of a dual-gate transistor according to the first node voltage and the second node voltage; a second drive unit controlled by the first node voltage and the second node voltage, providing a second driving signal to a second grid electrode of the double-grid transistor according to the reference voltage or the first driving signal, wherein the second gate of the dual-gate transistor is farther from the substrate of the dual-gate transistor than the first gate. In a conduction region of the double-gate transistor, wherein the first driving signal and the second driving signal are the same, the double-gate transistor at least partially turns off an interval, the level states of the first driving signal and the second driving signal are consistent, the voltage of the first driving signal is higher than that of the second driving signal, the leakage current of the double-gate transistor in the turn-off interval is reduced, and the display quality of the display device is improved.

Description

technical field [0001] The present invention relates to the technical field of driving, and more particularly, relates to a gate driving circuit, a method and a display device thereof. Background technique [0002] With the continuous improvement of silicon thin film technology, in the field of display technology, in order to improve the display quality, technicians will use double-gate transistors in the array substrate of the display device. [0003] The display device includes a display panel, and the display panel includes pixel units arranged in an array, and the pixel units include transistors and pixels. Such as figure 1 A display device 1000 shown includes a display panel 1100 , a gate driving circuit and a source driving circuit. The gate driving circuit includes a plurality of cascaded gate driving units 1200 . The display panel 1100 includes a plurality of transistors 1110 arranged in an array, the sources of the transistors 1110 are respectively connected to t...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the same voltage is provided to the first gate and the second gate of the transistor through the gate drive circuit, or the AC voltage is provided to the first gate through the gate drive circuit and the DC voltage is provided to the second gate separately. , can increase the on-state current of the transistor device, but at the same time, the leakage current of the double-gate transistor is relatively large in the off interval, which makes the switching performance of the transistor device worse, thereby affecting the display quality of the display device

[0005] The above technical problems can be solved by adjusting the manufacturing process of transistors, but the investment cost and technical difficulty of this solution are relatively large

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