Shift register unit and driving method, gate drive circuit and display device thereof

A technology for shift registers and gates, which is applied in the field of gate drive circuits and display devices, shift register units and their drives, and can solve problems such as drift, affecting product quality, and uneven brightness of display devices, so as to improve drift, Improve display quality effect

Active Publication Date: 2013-04-24
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of such a shift register unit is that the threshold voltage of the pull-down transistor will drift under the DC bias, which will cause uneven brightness of the display device and affect the quality of the product

Method used

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  • Shift register unit and driving method, gate drive circuit and display device thereof
  • Shift register unit and driving method, gate drive circuit and display device thereof
  • Shift register unit and driving method, gate drive circuit and display device thereof

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Embodiment Construction

[0031] 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.

[0032] The transistors used in all embodiments of the present invention can be thin film transistors or field effect transistors or other devices with the same characteristics. Since the source and drain of the transistors used here are symmetrical, there is no difference between the source and the drain. of. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the gate, one pole is called the source, and t...

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Abstract

The invention discloses a shift register unit and a driving method, a gate drive circuit and a display device of the shift register unit, and relates to the technical field of displaying. The shift register unit and the driving method, the gate drive circuit and the display device of the shift register unit are capable of solving the problem that the threshold voltage of a transistor drifts under direct current bias, and improving displaying quality of a product. The shift register unit comprises a upward pulling module, a pre-charge reset module, a downward pulling module, a downward pulling control module and an electric discharge module. The shift register unit and the driving method, the gate drive circuit and the displaying device of the shift register are used for achieving gate driving scanning from top to bottom or from bottom to top.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register unit, a driving method thereof, a gate driving circuit and a display device. Background technique [0002] For TFT-LCD (Thin Film Transistor-Liquid Crystal Display, Thin Film Field Effect Transistor Liquid Crystal Display), the basic principle of realizing a frame of picture display is to drive the signal required by each row of pixels from top to bottom through source (source) drive. The bottom output is driven through the gate (gate) to input a square wave of a certain width to each pixel row in sequence from top to bottom to strobe. At present, to manufacture such a display device with such a structure, the gate drive circuit and the source drive circuit are usually bonded on the glass panel through the COG (Chip On Glass, the chip is directly fixed on the glass) process, but for small-sized TFT-LCD In other words, when the resolution is high, the outputs of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G11C19/28
Inventor 吴博祁小敬
Owner BOE TECH GRP CO LTD
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