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GOA circuit and driving method thereof and display panel

A circuit and gate drive technology, applied in static indicators, instruments, etc., can solve the problems of easy threshold voltage shift, GOA circuit output failure, abnormal display, etc., and achieve the effect of suppressing threshold voltage shift and improving reliability.

Active Publication Date: 2021-01-29
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a GOA circuit, its driving method, and a display panel to solve the problem that the existing GOA circuit contains multiple transistors. It works normally, but the output failure of the GOA circuit causes the technical problem of display abnormality

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  • GOA circuit and driving method thereof and display panel
  • GOA circuit and driving method thereof and display panel
  • GOA circuit and driving method thereof and display panel

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Embodiment Construction

[0032] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar elements are denoted by the same reference numerals.

[0033] The present invention is aimed at the GOA circuit, liquid crystal display panel and display device in the prior art to solve the problem that the existing GOA circuit contains multiple transistors. Normal operation causes the output failure of the GOA circuit to cause abnormal display, and this embodiment can solve this defect.

[0034] see figure 2 , the GOA...

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Abstract

The invention provides a GOA circuit and a driving method thereof and a display panel, the GOA circuit comprises M cascaded GOA units, the Nth GOA unit comprises a forward and reverse scanning controlmodule, a node signal control module, a voltage stabilization module, an output control module, a first pull-down module and a second pull-down module, the voltage stabilization module is connected with the forward and reverse scanning control module through a first node, the output control module is connected with the voltage stabilization module through a second node, the first pull-down moduleis connected with the node signal control module through a third node, and the second pull-down module is connected with the output control module and the voltage stabilization module through a second node, and is used for pulling down the potential of the second node, and when the second pull-down module is in a working state, the forward and reverse scanning control module controls the voltagestabilizing module to be in an off state, so that no transistor in an on state for a long time exists in the GOA circuit, the threshold voltage offset of the transistor is suppressed, and the reliability of the GOA circuit is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA circuit, a driving method thereof, and a display panel. Background technique [0002] The GOA (Gate Driver On Array) circuit refers to the use of the existing thin-film transistor liquid crystal display array (array) manufacturing process to make the Gate (gate) row scanning drive signal circuit on the array substrate to realize a driving method for Gate progressive scanning. technology. [0003] The GOA circuit contains multiple transistors. If a transistor is turned on for a long time, its threshold voltage will easily shift, which will cause the transistor to fail to work normally, resulting in failure of the output of the GOA circuit and abnormal display. For example, taking the forward scan as an example, in figure 1 In the GOA circuit unit shown, the gate of transistor T6 is connected to a high-potential signal, and the transistor T6 is turned on for a long time, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677G09G2320/043G09G2310/0286G11C19/28G09G2300/0408G09G2300/0842G09G2310/061G06F3/04166G09G2310/0283G09G2310/0289G09G3/3696G06F3/0412
Inventor 吕京
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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