Shift register and gate driver

A shift register and control electrode technology, applied in static memory, digital memory information, instruments, etc., can solve problems such as threshold voltage drift, affecting the discharge speed of pull-down transistors, etc.

Active Publication Date: 2021-08-20
PEKING UNIV SHENZHEN GRADUATE SCHOOL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after the pull-down transistor works under voltage stress for a long time, the threshold voltage drift will occur, which will affect the discharge speed of the pull-down transistor

Method used

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  • Shift register and gate driver
  • Shift register and gate driver
  • Shift register and gate driver

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Embodiment Construction

[0028] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings show, by way of example, specific embodiments in which the application can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the application. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present application. Accordingly, the following detailed description is not limiting, and the scope of the application is defined by the appended claims.

[0029] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description. The connection between the units in the drawings is only for the convenience...

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Abstract

The present application discloses a shift register unit including an input module configured to receive an input signal; an output and low-level maintenance module coupled to the output terminal of the input module, and under the influence of a first clock signal, the The input signal is transmitted to the output of the shift register unit; an inverting module, coupled between the input module and the output and low-level maintenance module, is configured to send the output signal to the output based on the input signal and a low-level maintenance module providing discharge and / or low-level maintenance control signals; and a suppression module, coupled between the output terminal of the input module and the output terminal of the inverting module, configured to be in the memory unit When the output terminal does not output a valid level, partially or completely suppress the influence of the transition of the first clock signal on the output of the shift register unit.

Description

technical field [0001] The present application belongs to the field of information display, and in particular relates to a shift register for a pixel circuit, a gate driving device and a corresponding method. Background technique [0002] With the development of display technology, the performance requirements of TFT displays are getting higher and higher. In order to precisely control the pixel circuit of a TFT display, a matching driving circuit is often required, and in order to realize a narrow frame display design, both the gate driving circuit and the pixel circuit are realized by TFT transistors. [0003] In a traditional gate drive circuit, the gate of the drive transistor used for output goes through a "precharge" and "bootstrap" phase successively to ensure that the output of the circuit responds faster. In this gate driving circuit, the driving transistor is coupled to a relatively high-frequency clock to realize the function of the circuit. However, the jump of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3266G09G3/32G11C19/28
CPCG09G3/32G09G3/3266G09G2310/0286G11C19/28
Inventor 张盛东马一华廖聪维钟德镇乔艳冰李海波
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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