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goa circuit and display panel

A circuit and potential technology, which is applied in the field of display panels, can solve problems such as poor display of display panels, poor transmission of GOA circuits, and lowering, so as to achieve the effect of avoiding poor display and improving poor transmission

Active Publication Date: 2022-07-29
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

BCE structure (Back Channel Etching) oxide semiconductor thin film transistor has a wide application prospect in large-size AMLCD and AMOLED display panels due to its advantages of high mobility, good uniformity, and low manufacturing cost, but BCE structure oxide semiconductor When the thin film transistor is turned on under high Vds&Vgd cross voltage (drain and source voltage difference & gate and drain voltage difference) (that is, deep saturation working state), it is easy to appear Ion drop (the on-state current Ion of the thin film transistor is reduced). problem, resulting in poor grade transmission of the GOA circuit, resulting in poor display of the display panel

Method used

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing...

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Abstract

The present application proposes a GOA circuit, which includes a plurality of cascaded GOA units, at least one GOA unit includes a precharge module, and the precharge module includes a first precharge sub-module and a second precharge sub-module, and the first precharge sub-module Both the module and the second precharge sub-module are electrically connected to the first node of the GOA unit, and the first pre-charge sub-module and the second pre-charge sub-module sequentially charge the first node.

Description

technical field [0001] The present application relates to the technical field of display panels, and in particular, to a GOA circuit and a display panel. Background technique [0002] Gate Driver On Array (Gate Drive Circuit), referred to as GOA, is to use the existing liquid crystal display thin film transistor (TFT) array (Array) process to fabricate the line scan drive signal circuit on the array substrate to realize the scanning line (Gate ) is driven by progressive scan. Because the GOA technology can save the scanning driver IC (gate IC) and realize the advantages of narrow border, etc., the GOA technology has been widely used in panel design at present. Oxide semiconductor thin film transistor (IGZO, indium gallium zinc oxide, indium gallium zinc oxide) is a channel layer material used in a new generation of thin film transistor technology. BCE structure (back channel etching) oxide semiconductor thin film transistors have wide application prospects in large-size AM...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3266G09G3/36
CPCG09G3/3266G09G3/3677
Inventor 李育智
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD