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GOA circuit applied to In Cell type touch display panel

A touch display panel and circuit technology, applied in static indicators, electrical digital data processing, data processing input/output processes, etc., can solve problems such as leakage, avoid functional failure, prevent output to scan drive signals, The effect of reducing crosstalk

Active Publication Date: 2015-12-30
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when the existing single-type GOA circuit realizes the stop function, there is a risk of leakage

Method used

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  • GOA circuit applied to In Cell type touch display panel
  • GOA circuit applied to In Cell type touch display panel
  • GOA circuit applied to In Cell type touch display panel

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Embodiment Construction

[0035] 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.

[0036] see figure 1 , combined with Figure 6 and Figure 7 , the present invention provides a GOA circuit applied to an InCell type touch display panel, where N is a positive integer, and the Nth-level GOA unit includes: a forward and reverse scanning control module 1, a first node pull-down control module 2, a second node Control module 3 , second node reset module 4 , output control module 5 during pause, output control module 6 during black screen, and output control module 7 during normal display.

[0037] The forward and reverse scan control module 1 includes: a first N-type thin film transistor T1, the gate of the first N-type thin film transistor T1 is electrically connected to the scan output terminal G (N- 2), the source is connec...

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Abstract

The invention provides a GOA circuit applied to an In Cell type touch display panel. In a black screen period, a thirteenth N-type thin film transistor is controlled to be connected through a first global signal, all grades of scanning driving signals rise to high potential at the same time, a twelfth N-type thin film transistor is controlled to be connected through the first global signal to lower the potential of a second node, meanwhile, the potential of a first node is lowered, and the All Gate On function is prevented from failing. The second node is reset through a reset signal and a fourteenth N-type thin film transistor, and normal output is achieved after a black screen is awakened. In an intermediate stopping period, negative potential is set to be a pulse signal with the amplitude, the phase and the frequency the same as those of a touch signal, a fifteenth N-type thin film transistor is controlled to be connected through a second global control signal to output the negative potential in a pulse form, and crosstalk between the touch signal and a scanning output end is reduced.

Description

technical field [0001] The invention relates to the field of liquid crystal display technology, in particular to a GOA circuit applied to an InCell touch display panel. Background technique [0002] GOA (GateDriveronArray) technology is array substrate line drive technology, which uses thin film transistor (ThinFilm Transistor, TFT) liquid crystal display array process to manufacture gate scanning drive circuit on the thin film transistor array substrate to realize the driving method of progressive scanning, which has the advantages of reducing The advantages of production cost and the realization of narrow bezel design of the panel are used by many kinds of displays. The GOA circuit has two basic functions: the first is to output the scan driving signal, drive the gate lines in the panel, and turn on the TFT in the display area to charge the pixels; the second is the shift register function, when the Nth scan After the output of the driving signal is completed, the output ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG06F3/0412G09G3/20G09G2310/0245G09G2310/0267G09G2310/0283G09G2310/0286G09G2354/00G06F3/04184G06F3/044G06F2203/04103
Inventor 肖军城曹尚操颜尧戴荣磊
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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