GOA circuit, liquid crystal panel and display device

Abstract

The invention provides a GOA circuit including a plurality of cascaded GOA structural units. Each single GOA structural unit outputs a row scanning signal to a corresponding row of pixel unit in a display area of a display panel according to an Nth-level GOA structural unit. The Nth-level GOA structural unit includes a forward and reverse scanning control module, a node signal control input module, an output control module, a voltage stabilization module, a Q point pull-down module, a P point pull-down module, a gate signal pull-down module, a GAS signal action module and a bootstrap capacitor. The gate of a first thin film transistor of the voltage stabilization module is connected to a third GAS signal, the source is connected with the forward and reverse scanning control module and theQ point pull-down module, and the drain is connected with a first node. The third GAS signal is a VGH signal during touch screen scanning, and is a VGL signal during stop. By implementing the GOA circuit, the problem that the previous GOA circuit has insufficient maintenance capability during stop of the touch screen is avoided. The cascaded transmission failure risk of the GOA circuit is reduced,and the GOA circuit is more stable.

Description

technical field [0001] The present invention relates to the technical field of liquid crystal display, in particular to a GOA (Gate Driver On Array, array substrate row driving) circuit, a liquid crystal panel, and a display device. Background technique [0002] GOA technology utilizes the existing thin-film transistor liquid crystal display array manufacturing process to fabricate gate row scanning drive signal circuits on the array substrate to form a scan drive for the liquid crystal panel. Compared with traditional COF (Chip On Flex / Film, chip-on-film) technology, GOA technology can not only greatly save manufacturing costs, but also save the Bonging process of COF on the Gate side, which is also extremely beneficial to increase production capacity. Therefore, GOA is a key technology for the development of LCD panels in the future. [0003] With the development of low-temperature polysilicon (LTPS) semiconductor thin film transistors, and due to the characteristics of u...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the embodiments of the present invention is to provide a GOA circuit, a liquid crystal panel, and a display device, which can overcome the problem of insufficient holding capacity of the GOA circuit when it is stopped in the touch screen, and reduce the risk of failure of the GOA circuit in stages. purpose, to make the circuit more stable

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