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A shift register, its driving method, gate driving circuit and display device

A gate drive circuit and shift register technology, applied in static memory, digital memory information, instruments, etc., can solve problems such as poor display of GOA

Inactive Publication Date: 2020-11-06
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a shift register, its driving method, a gate driving circuit and a display device to solve the problem of poor display in GOA

Method used

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  • A shift register, its driving method, gate driving circuit and display device
  • A shift register, its driving method, gate driving circuit and display device
  • A shift register, its driving method, gate driving circuit and display device

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Embodiment Construction

[0046] Existing shift registers such as figure 1 As shown, it generally includes: a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4 and a capacitor C. Existing gate drive circuits such as Figure 2a As shown, it consists of multiple cascaded shift registers, and the output terminal of the nth stage shift register is connected to the input signal end of the n+1th stage shift register. At this time, if the nth stage shift register has no output, the following cascaded shift registers cannot be opened normally, and there will be a problem of poor display. Such as Figure 2bAs shown, in order to realize the pre-charging function in the existing gate drive circuit, the output end of the shift register of the nth stage can be connected with the input signal end of the shift register of the n+2th stage. At this time, if the shift register of the nth stage If the bit register has no output, then the n+2th stage shift register has no input,...

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Abstract

The invention discloses a shift register, a driving method thereof, a gate driving circuit and a display device. The shift register comprises an input module, a reset module and an output module. As the input module is provided with at least two input signal ends and the input signal ends are loaded with input signals with different time sequences respectively, when input signals of a certain input signal end fail, normal operation of the input model can be ensured by other input signal ends. Further, when the shift registers form the gate driving circuit and output signals of a shift registerin a certain level go wrong, cascaded later shift registers can be switched on normally under effects of other input signal ends, and the problem of bad display is avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register, a driving method thereof, a gate driving circuit and a display device. Background technique [0002] With the rapid development of display technology, display panels show a development trend of high integration and low cost. Among them, the gate driver on array (GOA, Gate Driver on Array) technology integrates the gate switch circuit of the thin film transistor (TFT, Thin Film Transistor) on the array substrate of the display panel to form a scan drive for the display panel, thus saving The bonding (Bonding) area of ​​the gate integrated circuit (IC, Integrated Circuit) and the wiring space of the fan-out (Fan-out) area can not only reduce the product cost in terms of material cost and manufacturing process, but also make the display panel Beautiful design with symmetrical sides and narrow bezels. [0003] A general gate drive circuit is composed of multiple ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G11C19/28
CPCG09G3/20G09G2310/0286G11C19/28
Inventor 顾可可杨妮许亨艺陈雪芳胡琪刘剑峰李云泽
Owner BOE TECH GRP CO LTD