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goa circuit and its driving method, display panel

A display panel and circuit technology, applied in the field of drive, can solve problems such as difficult operation, difficulty in achieving complete discharge, failure of drive system to support, etc., and achieve the effect of avoiding abnormal startup

Active Publication Date: 2019-03-15
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

However, the reference voltage is at a low level, and it takes time to pull it up to a high level. The required time needs to be specially designed according to the entire driving system of the LCD panel. Not only is it difficult to operate, but some driving systems may not be able to support this technology, resulting in Difficult to achieve full discharge

Method used

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  • goa circuit and its driving method, display panel
  • goa circuit and its driving method, display panel
  • goa circuit and its driving method, display panel

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions of each exemplary embodiment provided by the present invention with reference to the accompanying drawings in the embodiments of the present invention. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0016] figure 1 It is a structural schematic diagram of a display panel according to an embodiment of the present invention. Such as figure 1 As shown, the display panel 10 is provided with a GOA circuit 20 outside its display area (Active Area). The GOA circuit 20 can be formed on the array substrate or the color filter substrate of the display panel 10, and because the display panel 10 drives each The structures of the GOA circuits of the scan lines are all the same, so this embodiment drives the nth level scan line G n The GOA circuit 20 is described as an example.

[0017] figure 2 is a schematic diagram of a GOA circu...

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PUM

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Abstract

A GOA circuit (20) and a driving method therefor, and a display panel (10). A node (24) having an accessible reference voltage (VSS) is arranged between a pull-up control circuit (21) and a pull-up circuit (22) of the GOA circuit (20). An input end of a reset circuit (23) is connected to the node (24), an output end of the reset circuit (23) is used for accessing the reference voltage (VSS), and a control end of the reset circuit (23) is used for accessing a start signal (STV) at a moment when the display panel (10) is shut down, so as to pull down the potential of the node (24).

Description

technical field [0001] The present invention relates to the field of drive technology, in particular to a GOA (Gate Driver on Array, array substrate row drive) circuit, a drive method thereof, and a display panel. Background technique [0002] In the GOA technology, the driving circuit of the scanning line is manufactured on the substrate around the display area of ​​the liquid crystal display panel, so that it replaces an external IC (Integrated Circuit, integrated circuit) to complete the driving of the scanning lines at all levels. The GOA technology can not only reduce the welding (bonding) process of the external IC, but also facilitate the narrow frame or frameless design of the liquid crystal display panel. [0003] Currently, the GOA circuit mainly includes a pull-up circuit, a pull-up control circuit, and a pull-down circuit, wherein there is a node between the pull-up control circuit and the pull-up circuit that can be connected to a reference voltage, that is, a Q...

Claims

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Application Information

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