Shifting register unit, grid drive circuit and driving method and display device

A gate drive circuit and shift register technology, which are applied in the fields of gate drive circuits and drive methods, display devices, and shift register units, can solve problems such as threshold voltage drift and influence on display effects, etc.

Active Publication Date: 2017-12-12
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When scanning in the reverse direction, the last level of GOA units is used as the first level. Due to the severe threshold voltage drift, the output voltage of the GOA units in this row will be lower than the voltage

Method used

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  • Shifting register unit, grid drive circuit and driving method and display device
  • Shifting register unit, grid drive circuit and driving method and display device
  • Shifting register unit, grid drive circuit and driving method and display device

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] An embodiment of the present invention provides a shift register unit, as shown in FIG. 2( a ), including a first input circuit 10 , a second input circuit 20 , an output circuit 30 and a pull-up node reset circuit 40 .

[0037] Wherein, the first input circuit 10 is connected to the first signal terminal IN1, the first voltage terminal V1, and the pull-up node PU, and is used to output the voltage of the first voltage terminal V1 to the pull-up node und...

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PUM

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Abstract

The invention provides a shifting register unit, a grid drive circuit and a driving method and a display device, relates to the technical field of display, and can solve the problem that dark lines appear on a display screen as a threshold voltage drifts. The shifting register unit comprises a first input circuit, a second input circuit, an output circuit and a pull-up node reset circuit, wherein the first input circuit is used for outputting a voltage of a first voltage end to a pull-up node under control of a first signal terminal; the second input circuit is used for outputting a voltage of a second voltage end to the pull-up node under control of a second signal terminal; the output circuit is used for outputting a voltage of a clock signal terminal to the signal output end under control of the pull-up node; and the pull-up node reset circuit is used for outputting a voltage of a third voltage end to the pull-up node under control of a third signal terminal.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a shift register unit, a gate driving circuit and a driving method thereof, and a display device. Background technique [0002] In recent years, the development of displays has shown a trend of high integration and low cost. One of the very important technologies is the mass production of GOA (Gate Driver on Array, integrated gate drive circuit) technology. The GOA technology is used to integrate the gate drive circuit on the array substrate of the display panel, so that the part of the gate drive integrated circuit can be saved, so as to reduce the product cost in terms of material cost and manufacturing process. The gate switch circuit integrated on the array substrate using the GOA technology is also called a GOA circuit or a shift register circuit, and each shift register in the gate switch circuit is also called a GOA unit. The pull-up and pull-down control struct...

Claims

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Application Information

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IPC IPC(8): G09G3/20G11C19/28
CPCG09G3/20G11C19/28G09G2310/0286G09G2310/0267G09G2300/0408G09G2320/0233G09G2310/061G09G3/2092G09G2300/0426G09G2310/08
Inventor 米磊李彦辰薛艳娜
Owner BOE TECH GRP CO LTD
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