GOA drive circuit

一种驱动电路、电位的技术，应用在电数字数据处理、静态存储器、仪器等方向，能够解决电路失效、稳定性差等问题，达到提升稳定性、消除失效风险的效果

Active Publication Date: 2016-04-20
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing GOA driving circuit applied to touch display panels has the risk of circuit failure when realizing AllGateOn and touch scanning functions, and the stability is poor

Method used

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Embodiment Construction

[0049] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0050] see figure 1 or Figure 9 , the present invention provides a GOA driving circuit, comprising: cascaded multi-level GOA units, each level of GOA unit includes: a forward and reverse scanning control module 100, a basic output module 200, a basic output pull-down module 300, a first node The control module 400 , the second node control module 500 , the output control module 600 , the reset module 700 , the voltage stabilizing module 800 , and the second node charging module 900 .

[0051] Let n be a positive integer, except for the first level GOA unit, the second level GOA unit, the penultimate level GOA unit, and the last level GOA unit, in the nth level GOA unit:

[0052] The forward and reverse scanning control module 100 includes: ...

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PUM

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Abstract

The invention provides a GOA (Gate Driver on Array) drive circuit, comprising a blank screen awakening stage, in which a twelfth thin film transistor (T12) is controlled through a first global control signal (Gas1) to open to realize an All Gate On function, and meanwhile a T11 is controlled to pull down the potential of a second node (P(n)); a reset stage, in which a T1 is controlled through a reset signal (Reset) to reset the potential of the second node (P(n)), and the single pulse time length of the reset signal (Reset) is at least set to be the initial pulse time length sum of a first clock signal and a second clock signal, thereby guaranteeing that the second node (P(n)) after a blank screen is awakened is at a high potential, and GOA driving circuit output is normal; and a touch control scanning stage, in which a T13 is controlled through a Gas2 to open, allowing the output terminal of each stage of GOA unit to output composite signals (CS), wherein the CS is a pulse signal having the same frequency with a touch control scanning signal, thereby guaranteeing touch control scanning normal operation.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA driving circuit. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen, etc., occupy a dominant position in the field of flat panel display. [0003] Active Matrix Liquid Crystal Display (AMLCD) is currently the most commonly used liquid crystal display device, the active matrix liquid crystal display includes a plurality of pixels, each pixel has a thin film transistor (ThinFilmTransistor, TFT), the gate of the TFT is connected to To the scanning line extending in the horizontal direction, the drain is connected to the data line extending in the vertical direction, and the source of the TFT is connected to the correspond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677G06F3/0412G09G3/20G09G2300/0408G09G2310/0245G09G2310/0281G09G2310/0283G09G2310/0286G09G2354/00G11C19/28G06F3/04166G09G3/36G09G3/3659G09G2300/0852G09G2300/0871G09G2310/021G09G2310/0289G09G2310/063G09G2310/08
Inventor 肖军城颜尧曹尚操戴荣磊
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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