Shifting register unit and driving method thereof, gate driving circuit and display device

A shift register and gate connection technology, which is applied in the field of gate drive circuit and display device, shift register unit and its drive, can solve the problems of GOA circuit output signal noise, etc., to ensure life expectancy and long-term stable work , the effect of improving the quality

Active Publication Date: 2013-12-04
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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Problems solved by technology

However, there are also certain problems in the design of the existing GOA circuit. The voltage of the key node used to control the output of the gate line scan signal in the existing GOA circuit is usually reduced due to the leakage of the transistor, which will cause the output signal of the GOA circuit With noise, the existing GOA circuit is difficult to solve this problem

Method used

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

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Embodiment Construction

[0033] 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. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0034] 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 first pole, and the other pole is called the s...

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Abstract

The invention provides a shifting register unit and a driving method thereof, a gate driving circuit and a display device. The potential of a pull-up control node is pulled up continuously by output signals of a multistage shifting register circuit, output noise of the shifting resister unit can be released through the high potential of the pull-up control node, and therefore, quality of display device products is improved, and service life and long-term performance stability of GOA (gate drive on array) circuits are guaranteed. The shifting register unit comprises an input module, a pull-up module, a pull-down control module, a pull-up control module and a pull-down module.

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] The basic principle of TFT-LCD (Thin Film Transistor-Liquid Crystal Display, Thin Film Field Effect Transistor-Liquid Crystal Display) to realize a frame display is to input a certain width to each pixel row sequentially from top to bottom through the gate (gate). The signal for each row of pixels is sequentially output from top to bottom through source driving. At present, the manufacture of display devices with such a structure is usually to make the gate drive circuit and the source drive circuit on the On the glass panel, but when the resolution is high, the output of the gate drive and the source drive are more, and the length of the drive circuit will also increase, which will not be conducive to the bonding process of the module drive circuit. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G11C19/00
CPCG09G3/3677G09G2300/0408G09G2300/0426G09G2310/0224G09G2310/0286G09G2320/043G11C19/28G09G2310/0289G09G2320/0214
Inventor 杨东陈希杨明
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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