Grid driving circuit, TFT array substrate, display panel and display device

A gate drive circuit and gate technology, which are applied in the fields of gate drive circuits, TFT array substrates, display panels and display devices, can solve problems such as booting the screen, high temperature jitter of the display device, affecting the display effect of the display device, etc. The effect of potential drift

Active Publication Date: 2014-07-23
SHANGHAI AVIC OPTOELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual use, it is found that the output potential of the shift register will drift to a high potential before scanning, resulting in high-temperature jitter in the display device and blurred screen at startup, which affects the display effect of the display device

Method used

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  • Grid driving circuit, TFT array substrate, display panel and display device
  • Grid driving circuit, TFT array substrate, display panel and display device
  • Grid driving circuit, TFT array substrate, display panel and display device

Examples

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Embodiment Construction

[0028] The present invention will be described in more detail and complete below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

[0029] The gate drive circuit usually includes multi-stage cascaded shift registers. During the scanning period of each frame, the shift registers at all levels scan sequentially, and the shift registers at all levels sequentially output an output signal (gate drive signal). The gate lines in the TFT array substrate are controlled to receive corresponding gate drive signals; and when the shift registers of each stage are not scanning, the shift registers output a low potential output signal.

[0030] It shou...

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Abstract

The invention provides a gate driving circuit which includes m levels of serially connected shifting registers. Each level of shifting register includes a first resetting end, a first input end and an output end. A first resetting end of a first-level shifting register in the m levels of shifting registers receives resetting signals so as to enable the first-level shifting register to reset before scanning. Shifting registers from a second-level shifting register to an ith-level shifting register reset before the scanning. A first resetting end of an nth-level shifting register is electrically connected to an output end of an (n-1)th-level shifting register so as to receive output signals of the output end of the (n-1)th-level shifting register. The output signals of the output end of the (n-1)th-level shifting register control the nth-level shifting register to reset before the scanning, wherein all of I, m and n are positive integers and m>3, 2<=i<=m/2, i<n<=m, and n<=m. The grid driving circuit reduces or eliminates poor display phenomena such as high-temperature jittering and start-up grainy screen and the like so that the display effect is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a gate drive circuit, a TFT array substrate, a display panel and a display device. Background technique [0002] TFT array substrates of liquid crystal display (LCD, Liquid Crystal Display), organic light emitting display (OLED, Organic Light Emitting Diode Display) and other display devices usually include a gate drive circuit, which provides gate drive for the TFT array substrate Signal. The gate drive circuit includes a multi-stage shift register. In actual use, it was found that the output potential of the shift register would drift to a high potential before scanning, resulting in high temperature jitter and blurred screen when starting up the display device, thereby affecting the display effect of the display device. Contents of the invention [0003] Embodiments of the present invention provide a gate driving circuit, a TFT array substrate, a display panel and a displ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G11C19/28
CPCG09G3/3674G09G2310/0281G09G3/3266G09G2310/0286
Inventor 夏志强徐鑫孙丽娜敦栋梁金慧俊
Owner SHANGHAI AVIC OPTOELECTRONICS
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