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Gate driving unit, driving method thereof, gate driving circuit and display device

A gate drive and circuit technology, applied to static indicators, instruments, etc., can solve problems such as drive signal distortion, noise generation, and influence on drive signal stability, achieve smooth and stable output signals, improve drive stability, and resist strong interference effect

Active Publication Date: 2017-10-27
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many kinds of traditional GOA unit circuits, but because the signals in the GOA unit circuit are more complex and there are more parasitic capacitances, noise will be generated to affect the stability of the output driving signal, such as distorting the output driving signal

Method used

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  • Gate driving unit, driving method thereof, gate driving circuit and display device
  • Gate driving unit, driving method thereof, gate driving circuit and display device
  • Gate driving unit, driving method thereof, gate driving circuit and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a gate drive unit, such as figure 1As shown, it includes charging circuit 1, pull-up circuit 2 and pull-down circuit 3, and also includes anti-jamming circuit 4, charging circuit 1, pull-up circuit 2, pull-down circuit 3 and anti-jamming circuit 4 are connected to pull-up node Q; pull-down circuit 3 and the anti-interference circuit 4 are connected to the pull-down node P; the charging circuit 1, the pull-up circuit 2 and the pull-down circuit 3 are connected to the output terminal V(n) of the gate drive unit; the anti-interference circuit 4 is connected to the first potential terminal V1 and the second Two potential terminals V2; the pull-down circuit 3 is connected to the second potential terminal V2. The charging circuit 1 is used to receive the output signal of the output terminal V(n-1) of the gate driving unit of the upper stage, and charge the pull-up node Q. The pull-up circuit 2 is used for receiving the pull-up input signal CLK to mak...

Embodiment 2

[0060] This embodiment provides a gate driving unit, which is different from Embodiment 1 in that the output of the first potential terminal is a low potential, and the output of the second potential terminal is a high potential. The first switching tube, the second switching tube, the third switching tube, the fourth switching tube, the fifth switching tube, the sixth switching tube, the seventh switching tube, the eighth switching tube, the ninth switching tube, the tenth switching tube, The eleventh switch tube, the twelfth switch tube, the thirteenth switch tube and the fourteenth switch tube are all P-type thin film transistors or P-type MOS tubes.

[0061] Other circuit structures of the gate driving unit and the driving method of the gate driving unit in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

[0062]Beneficial effects of embodiment 1-2: the gate drive unit provided in embodiment 1-2, by setting the anti-interference circui...

Embodiment 3

[0064] This embodiment provides a gate drive circuit, such as Figure 4 with Figure 5 As shown, including the gate driving unit in Embodiment 1 or 2, multi-level gate driving units are cascaded in sequence.

[0065] By using the gate drive unit in Embodiment 1 or 2, it is possible to prevent the gate drive unit of this level from outputting any interference signal when the gate drive units of other levels output gate drive signals, thereby ensuring the gate drive circuit The output signal is smoother and more stable, which makes the anti-interference ability of the gate drive circuit stronger.

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Abstract

The invention provides a grid driving unit and a driving method thereof, a grid driving circuit and a display apparatus. The grid driving unit comprises a charging circuit, a pull-up circuit, a pull-down circuit and an anti-interference circuit. The charging circuit receives an output signal of an output terminal of a grid driving unit of a previous grade and charges a pull-up node. The pull-up circuit receives a pull-up input signal so that the grid driving unit outputs a driving signal. The pull-down circuit discharges the pull-up node under the control of a pull-down node and an output signal of the grid driving unit of a next grade and resets a driving signal of the grid driving unit. The anti-interference circuit prevents the grid driving unit of a current grade from outputting an interference signal when the grid driving units of other grades output driving signals under the control of the pull-up node and the output signal of the grid driving unit of the previous grade. By using the grid driving unit, the grid driving unit of the current grade does not output any interference signals when the grid driving units of the other grades output the driving signals so that the output signal of the grid driving unit is ensured to be smooth and stable.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a gate drive unit, a drive method thereof, a gate drive circuit and a display device. Background technique [0002] In the display industry, in order to reduce the material cost of the display panel and realize the narrow frame design of the display panel, more gate drive circuits adopt the GOA (Gate on Array) technology, which is the technology of integrating the gate drive circuit on the array substrate. The gate drive circuit is composed of multiple shift register units (ie, GOA units) cascaded. [0003] There are many kinds of traditional GOA unit circuits, but because the signals in the GOA unit circuit are complex and there are many parasitic capacitances, noise will be generated to affect the stability of its output driving signal, such as distorting its output driving signal. [0004] Therefore, how to suppress the output noise of the GOA unit has become a techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3611
Inventor 袁志东徐攀袁粲
Owner BOE TECH GRP CO LTD
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