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GOA (gate driver on array) circuit and liquid crystal display

A liquid crystal display and circuit technology, applied in the field of liquid crystal display, to achieve the effects of avoiding damage, improving stability, and reducing gate voltage

Active Publication Date: 2015-12-09
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of the bootstrap capacitor unit at the output end of the Gate signal, there will be maintenance problems

Method used

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  • GOA (gate driver on array) circuit and liquid crystal display
  • GOA (gate driver on array) circuit and liquid crystal display
  • GOA (gate driver on array) circuit and liquid crystal display

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Embodiment Construction

[0030] Certain words are used to refer to specific components in the description and claims, and those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] In order to solve the maintenance problem of the GOA circuit, the present invention provides a GOA circuit, such as figure 1 as shown, figure 1 It is a structural schematic diagram of the first embodiment of cascading multiple GOA sub-circuits of the GOA circuit of the present invention. The GOA circuit in this embodiment includes a potential pull-down processing circuit 101 and a plurality of cascaded GOA sub-circuits 102 . Wherein, in this embodiment, the potenti...

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Abstract

The invention discloses a GOA (gate driver on array) circuit and a liquid crystal display. The GOA circuit comprises a GOA, a potential pull-down processing circuit and a plurality of cascaded GOA sub-circuits. The plurality of cascaded GOA sub-circuits are N-level GOA sub-circuits. The potential pull-down processing circuit comprises a first voltage-limiting transistor (PTX), a second filtering transistor (PTY) and a third transistor (PTN). The first voltage-limiting transistor (PTX) and the second filtering transistor (PTY) are connected in series and then are connected between the output terminal of an initial scanning signal STV and the control terminal of the third transistor (PTN). The control terminal of the first voltage-limiting transistor (PTX) and the first terminal of the third transistor (PTN) are respectively connected with a first power supply terminal (VG). The second terminal of the third transistor (PTN) is connected with the GOA sub-circuits. Due to the adoption of the above arrangement, the damage of the large electrostatic current to the GOA circuit can be effectively avoided. Meanwhile, the stability of an entire panel GOA circuit is improved.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a GOA circuit and a liquid crystal display. Background technique [0002] GateDriverOnArray, referred to as GOA, is a technology that uses the existing thin-film transistor liquid crystal display Array process to fabricate the Gate row scan drive signal circuit on the Array substrate to realize the gate progressive scan drive method. [0003] With the development of low-temperature polysilicon (LTPS) semiconductor thin film transistors, and due to the ultra-high carrier mobility characteristics of LTPS semiconductors, the corresponding panel peripheral integrated circuits have also become the focus of attention, and many people have invested in System on Panel (SOP) Related technology research, and gradually become a reality. [0004] When the liquid crystal display is turned on, an AllGateOn initialization operation is performed to pull the voltage of all scanning Gate sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG11C19/184G09G2310/0286G09G2330/04G09G3/3677G09G2300/0408G09G2310/08G02F1/133514G02F1/136204G02F1/1368G02F2202/22G09G3/3696
Inventor 肖军城赵莽
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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