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

A shift register and electrode technology, applied in the field of display devices, gate drive circuits, shift registers and their driving methods, can solve the problems of unstable output signals of shift registers, reduce the display effect of display devices, etc., and achieve reduction The effect of layout area, high display effect and stable signal

Active Publication Date: 2015-09-09
WUHAN TIANMA MICRO ELECTRONICS CO LTD +1
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  • Abstract
  • Description
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Problems solved by technology

However, the output signal of the existing shift register is u

Method used

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

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[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0039] As described in the background art, the output signal of the existing shift register is unstable, which reduces the display effect of the display device.

[0040] Based on this, the embodiment of the present application provides a shift register, which not only has a stable output signal, but also occupies a small layout area, which is beneficial to the optimization of the narrow frame of the display device.

[0041] reference figure ...

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Abstract

The invention discloses a shift register and a drive method thereof, a gate drive circuit and a display device. By means of input signal control of various input terminals and matching of various transistors, shifting of valid signals input after the input terminals are operated is implemented, and the normal scanning of the gate drive circuit is guaranteed. According to the shift register, signals of a first node and second node control a first transistor and a second transistor correspondingly and respectively, only one of the first transistor and second transistor is conducted from a first time interval to a fifth time interval, and the suspension state of the input terminals is avoided; the arrangement of a fifth transistor is equivalent to a diode, the effect on the second node by coupling of a fourth capacitor is avoided, the effect on the second node by leakage current flowing to a fifth node is avoided, and the stability of the signals of the input terminals is guaranteed. In addition, the shift register is simple in structure, the territory area occupied by the shift register is reduced, and the optimization of the narrow border of the display device is benefited.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, relates to a shift register, a driving method thereof, a gate driving circuit, and a display device. Background technique [0002] Currently, display devices mainly include LCD (Liquid Crystal Display, liquid crystal display) display devices and OLED (Organic Light-Emitting Diode, organic electro-laser display) display devices, and both display devices include gate driving circuits. Wherein, the gate driving circuit includes a multi-stage shift register. During operation, the pixel array of the display device is scanned step by step through the multi-stage shift register to achieve the purpose of displaying images. However, the output signal of the existing shift register is unstable, which reduces the display effect of the display device. Contents of the invention [0003] In view of this, the present invention provides a shift register and its driving method, ...

Claims

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Application Information

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IPC IPC(8): G11C19/28G09G3/36G09G3/32
Inventor 吴桐钱栋张通
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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