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GOA device and gate drive circuit

A device, gate signal technology, applied in the direction of instruments, static indicators, etc., can solve the problem of insufficient charging of the GOA circuit, and achieve the effect of solving insufficient charging

Active Publication Date: 2020-07-24
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

[0005] This application provides a GOA device and a gate drive circuit to solve the technical problem of insufficient charging of the GOA circuit of the existing display panel

Method used

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  • GOA device and gate drive circuit
  • GOA device and gate drive circuit

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the a...

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Abstract

The invention provides a GOA device and a gate drive circuit. The GOA device comprises at least two cascaded GOA units, and the GOA unit comprises a pull-up control unit, a bootstrap capacitor, a pull-up unit, a pull-down unit and a pull-down maintenance unit. The input end of the pull-up control unit is connected with the starting signal of the (n-7) th stage, so that the control node (Qn) of then-th stage GOA unit is pulled up to a first high potential, and the bootstrap capacitor is charged; and the control node (Qn) is charged by seven levels in advance, so that the technical problem of insufficient charging of the existing high-resolution and high-refresh-frequency display panel is solved.

Description

technical field [0001] The present application relates to the display field, in particular to a GOA device and a gate drive circuit. Background technique [0002] The gate drive on array (GOA) technology is to integrate the scanning line driving circuit on the array substrate of the liquid crystal panel, thereby reducing the product cost in terms of material cost and manufacturing process. [0003] For high-resolution and high-frequency (such as 120HZ) display panels, due to the short charging time and the heavy capacitive load of the scanning line, the distortion of the gate pulse signal is serious, and the falling time value of the output signal of the gate signal line is relatively short. Large, resulting in a high risk of mischarging; in addition, when the display panel is in this state for a long time, the electrical properties of the thin film transistor will shift. [0004] At present, there is an urgent need for a gate driving circuit to solve the above technical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677G09G2310/0286G09G3/2092
Inventor 徐志达姚晓慧金一坤
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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