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Gate drive circuit and display panel

A gate drive circuit and circuit technology, applied in the direction of static indicators, instruments, etc., can solve the problems of poor stability of the gate drive circuit, achieve the effect of solving poor stability, reducing the pressure time, and increasing stability

Inactive Publication Date: 2019-12-13
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a gate drive circuit and a display panel, which are used to solve the technical problem of poor stability in the existing gate drive circuit

Method used

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  • Gate drive circuit and display panel
  • Gate drive circuit and display panel

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Experimental program
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Embodiment Construction

[0029] 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.

[0030] The present invention aims at the technical problem of poor stability of existing gate drive circuits, and the embodiments of the present invention are used to solve this problem.

[0031] Such as figure 1 As shown, the existing GOA circuit includes a third pull-up circuit 111, a fourth pull-up circuit 112, an nth stage signal output terminal 113, an nth stage ...

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PUM

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Abstract

The invention provides a gate drive circuit and a display panel. The gate drive circuit comprises a first pull-up circuit, a second pull-up circuit, a pull-down circuit, a phase inverter, a first pull-down holding circuit, a second pull-down holding circuit and a pull-up holding circuit, through arranging a pull-up control circuit, the pull-up control circuit raises the potential of the first point under the control of a third clock signal; therefore, the potential of the second point can be reduced for a period of time in each period; therefore, the pressed time of the transistor of the pull-down holding circuit is reduced, the stability of the gate drive circuit is improved, the second pull-down holding circuit ensures that the potential of the first point is reduced when the second point is at a high potential, and the technical problem that an existing gate drive circuit is poor in stability is solved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a gate drive circuit and a display panel. Background technique [0002] Existing flexible display panels use GOA (Gate Driver on Array, array substrate row drive) circuits to achieve narrow borders of flexible display panels, such as figure 1 As shown, the function of the pull-down sustain circuit in the GOA circuit is to maintain the Q point, the polar transmission signal Cout(n) and the output signal G(n) at low level, wherein the QB point controls the TFT gate point in the pull-down sustain circuit, but The QB point is at a high potential for a long time, therefore, the TFT of the pull-down maintenance unit is in the open state for a long time. When the TFT is under positive pressure, the threshold voltage is easy to be positively biased, resulting in weakened pull-down maintenance ability of the QB point and reducing the stability of the circuit. . [0003] Therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G3/20
Inventor 薛炎
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD