Shift register unit, driving method thereof, shift register and display device

A technology of shift registers and transistors, applied in static memory, digital memory information, instruments, etc., can solve problems such as abnormal display of display panels, affecting output signal quality, voltage mismatch between pull-up nodes and pull-down nodes, etc., to avoid display Abnormal, ensure the voltage matching degree, improve the effect of quality

Active Publication Date: 2021-12-21
SHANGHAI AVIC OPTOELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides a shift register unit and its driving method, a shift register and a display device, so as to solve the voltage mismatch between the pull-up node and the pull-down node in the related art, which affects the quality of the output signal and causes abnormal display on the display panel. The problem

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  • Shift register unit, driving method thereof, shift register and display device
  • Shift register unit, driving method thereof, shift register and display device
  • Shift register unit, driving method thereof, shift register and display device

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Embodiment Construction

[0044] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation...

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Abstract

The invention discloses a shift register unit and a driving method thereof, a shift register and a display device. The shift register unit comprises an input module, an output module, a first pull-down module, a pull-down control module and a voltage regulation module. The charging amount of a first capacitor in the voltage adjusting module is in positive correlation with the voltage of the first node, the charging amount of the first capacitor affects the voltage of a third node, the voltage of the third node affects the pulling-up degree of the voltage of the second node by a third voltage signal end, and then the pulling-down degree of the voltage of the first node by a second voltage signal end is affected. In other words, through the arrangement of the voltage adjusting module, the voltage matching degree between the first node and the second node can be effectively guaranteed, the quality of the output signal can be improved, and abnormal display of the display panel can be effectively avoided.

Description

technical field [0001] The present application belongs to the field of display technology, and in particular relates to a shift register unit, a driving method thereof, a shift register and a display device. Background technique [0002] Currently, the Amorphous Silicon Gate (ASG) technology has been widely used in the field of display panels. The ASG circuit can scan and drive the display panel by outputting signals. After the ASG finishes scanning and driving one frame of the display panel, it usually enters a blanking (blanking) period. During the blanking period, the pull-up node of the output signal can be connected to the low potential by controlling the pull-down node of the output signal (usually the gate point of the transistor), so as to pull down the potential of the pull-up node. [0003] However, in the related art, due to the influence of factors such as the threshold voltage shift of the transistor in the ASG circuit, there may be a voltage mismatch between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C19/28G09G3/20
CPCG11C19/28G09G3/20G09G2310/0286
Inventor 金慧俊秦丹丹
Owner SHANGHAI AVIC OPTOELECTRONICS
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