Shift register circuit, driving method, GOA circuit and display device

A shift register and circuit technology, applied in the fields of GOA circuits and display devices, shift register circuits, and driving methods, can solve problems such as poor display, line afterimage, transistor characteristic drift, etc., to eliminate shutdown afterimages and prevent defects. effect that occurs

Inactive Publication Date: 2017-03-08
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a shift register circuit, a driving method, a GOA circuit and a display device, so as to solve the problem that when the existing gate driver chip realizes the Xon function, all gate lines cannot If both are turned on, there will be phenomena such as line afterimages, and the existing technology does not reset the potential of the pull-up node in the GOA sub-circuit included in the shift register circuit when the display panel is turned off, which will cause the pull-up node to be damaged after shutdown. The residual voltage makes the characteristics of the transistor controlled by the pull-up node drift, which will cause the problem of poor display

Method used

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  • Shift register circuit, driving method, GOA circuit and display device
  • Shift register circuit, driving method, GOA circuit and display device
  • Shift register circuit, driving method, GOA circuit and display device

Examples

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Embodiment approach

[0056] According to a specific embodiment, such as figure 2 As shown, the shutdown control unit 11 may include:

[0057] The output control module 111 is connected to the gate drive signal output terminal Output and the turn-on voltage output line Von respectively, and is used to control the turn-on voltage output line Von to Applying a turn-on voltage to the gate drive signal output terminal Output; and,

[0058] The first pull-up node control module 112 is respectively connected to the pull-up node PU and the off-voltage output line Voff, and is used to control the pull-up node PU and the off voltage output line Voff when receiving the shutdown control signal of the display panel. The off voltage output line Voff is connected.

[0059] The shutdown control unit 11 can control the voltage state of the gate drive signal output terminal Output and the voltage state of the pull-up node PU during shutdown through the output control module 111 and the first pull-up node control...

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PUM

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Abstract

The invention provides a shift register circuit, a driving method, a gate-on-array (GOA) circuit and a display device. The shift register circuit comprises a GOA sub circuit including a pull-up node. Besides, the shift register circuit also includes a shutdown control unit that is used for controlling a cut-in voltage output line to apply a cut-in voltage to a gate driving signal output terminal when a shutdown control signal of a display panel is received and controlling the pull-up node to connect a turn-off voltage output line. According to the invention, the shutdown ghost can be eliminated by using the shutdown control unit; and the characteristic drift of the transistor controlled by the pull-up node due to the residual voltage of the pull-up node after shutdown can be prevented, so that an adverse phenomenon can be prevented to a certain extent.

Description

technical field [0001] The present invention relates to the technical field of display driving, in particular to a shift register circuit, a driving method, a GOA (Gate On Array, array substrate row driving) circuit and a display device. Background technique [0002] In the prior art, the gate driver IC (Gate Driver IC) has the function of Xon (the gate line is turned on at the moment of shutdown). All output channels of the chip output TFT (thin film transistor) turn-on voltage at the same time, so that all rows of TFT (thin film transistor) are turned on, and the residual charge on the pixel electrode is released. However, there are certain problems with this technology. For example, when all voltages are in the falling stage at the moment of shutdown, all channels output the turn-on voltage at the same time (the voltage value of the turn-on voltage is generally the same as the high voltage Vgh, about 27V), which will cause the gate drive chip to drive Insufficient capaci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G11C19/28
CPCG09G3/36G09G2310/0286G09G2320/0257G11C19/28G09G3/3677G09G2300/0408G09G2330/04G09G2300/0426G09G2310/08G09G2330/027
Inventor 赵剑王慧
Owner BOE TECH GRP CO LTD
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