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GOA circuit

A circuit and level circuit technology, applied in the display field, can solve problems such as increasing the feedback complexity of nodes P and Q, reducing the stability of GOA circuits, etc., achieving easy linear design and in-plane integration, avoiding point competition, and improving circuit performance. The effect of stability

Active Publication Date: 2021-05-11
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The feedback module connecting node Q and node P adopts a bidirectional feedback design, which increases the feedback complexity of node P and node Q, and will cause the result of bidirectional feedback between node P and node Q, which will reduce the stability of the GOA circuit sex

Method used

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0029] Such as figure 2 as well as image 3 As shown, the present invention provides a GOA circuit 100, including a plurality of cascaded circuit units, wherein the nth level circuit unit includes: an input pull-up module 110, an output pull-up module 120, a pull-down control module 130, and an output pull-down module 140 , the first feedback module 150 , the mirroring module 160 and the second feedback module 170 .

[0030] The input end of the input pull-up module ...

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PUM

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Abstract

According to a GOA circuit provided by the invention, a one-way feedback circuit is adopted between a first node and a second node, so that the circuit design complexity can be reduced, linear design and in-plane integration can be realized more easily, point competition between the first node and the second node can be avoided, and the circuit stability is improved. A first feedback module and a second feedback module which are in one-way connection are arranged, and the first feedback module is used for collecting the voltage of a second node and controlling the voltage of a first node according to the voltage of the second node. The second feedback module is used for controlling the voltage of the second node according to the voltage of the third node, and the voltage of the third node is provided by a mirror image module of the input pull-up module, so that one-way control of the first node and the second node is realized.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA circuit. Background technique [0002] With the improvement of users' requirements for the use of electronic GOA (Gate Driver On Array) circuits, the development of flexible bending display panels has attracted more and more attention. , at present, liquid crystal display devices have been widely used in various electronic products as display components of electronic equipment, and GOA circuits are an important part of liquid crystal display devices, that is, using the existing thin film transistor liquid crystal display array substrate manufacturing process to convert The grid row scanning driving signal circuit is fabricated on the array substrate to realize a driving method of progressive scanning of the grid. At present, the GOA circuit is mainly designed on both sides of the panel. With the continuous development of full-screen mobile phones, the requirements for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677G09G2310/0286G11C19/28G09G2300/0408G09G2300/0819
Inventor 田超曹海明
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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