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

A technology of shift register circuit and shift register unit, which is applied in the direction of information storage, static memory, static indicator, etc., and can solve the problem of incompatibility between stability and simple practicability

Inactive Publication Date: 2017-03-29
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 invention provides a shift register circuit and its driving method, a gate driving circuit and a display device, which can increase the stability characteristics of the GOA circuit without increasing the number of TFTs in the GOA unit, and solve the problem that the stability characteristics and simple practicability cannot be combined. got problem

Method used

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

Examples

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Effect test

Embodiment 1

[0041] An embodiment of the present invention provides a shift register circuit, including: a first-stage shift register unit and a second-stage shift register unit, and the shift register circuit further includes: a first-stage shift register unit and a second-stage shift register unit A stabilization module shared by the register unit, the stabilization module is configured to stabilize the pull-up node and the output terminal of the first-stage shift register unit when neither the first-stage shift register unit nor the second-stage shift register unit outputs a valid signal, The potential of the pull-up node and the output terminal of the second-stage shift register unit.

[0042] The above-mentioned first-stage and second-stage shift register units are general terms for shift register units, and are not used to specifically refer to a certain shift register unit. In the shift register circuit provided by this embodiment, a shared stabilization module is provided for any t...

Embodiment 2

[0094] This embodiment provides a gate driving circuit, including any shift register circuit in Embodiment 1. Specifically, the gate drive circuit provided in this embodiment includes multiple cascaded shift register units, in which two or more stages of shift register units share a stable module, which can not only increase the stability of the circuit, but also increase the stability of the circuit. Multiple tubes solve the problem of incompatibility between stability and simple practicability.

[0095] For example, refer to Figure 7 As shown, it is a gate drive circuit according to this embodiment, and the gate drive circuit includes a plurality of mutually cascaded shift register units, wherein the shift register unit of the first stage and the shift register unit of the second stage Share the stable module, the first input signal used by the shift register unit of the first stage and the shift register unit of the second stage is the frame start signal, and the reset sign...

Embodiment 3

[0101] An embodiment of the present invention also provides a display device, which includes any shift register circuit described in Embodiment 1, or any gate drive circuit described in Embodiment 2. Since the display device adopts the gate driving circuit with simpler structure and better performance (good stability and avoiding threshold drift problem) described in the present invention, the cost is lower and the display quality is higher. The display device may be any product or component with a display function such as a liquid crystal panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television set, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.

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Abstract

An embodiment of the invention discloses a shift register circuit and a driving method thereof, a gate drive circuit and a display device, and relates to the field of display. Stability characteristics of a GOA circuit can be improved without increasing the number of TFT in the GOA unit, and the problem that the stability characteristics and simple practicality cannot be obtained together is solved. The shift register circuit comprises a first-level shift register unit and a second-level shift register unit. The shift register circuit also comprises a stabilization module shared by the first-level shift register unit and the second-level shift register unit. The stabilization module is configured to stabilize electric potential of the output end of a pull-up node of the first-level shift register unit and the electric potential of the output end of a pull-up node of the second-level shift register unit when both the first-level shift register unit and the second-level shift register unit do not output effective signals.

Description

technical field [0001] The present invention relates to the field of display, in particular to a shift register circuit, a driving method thereof, a gate driving circuit and a display device. Background technique [0002] Integrated gate driver ICs (GOA, Gate Driver on Array) technology is a process technology that directly integrates gate driver ICs (Gate driver ICs) on the array substrate instead of an external driver chip. The application of this technology can not only reduce the production process, reduce product cost, improve integration, but also achieve a symmetrical and beautiful design on both sides of the panel, and also save the bonding (Bonding) area of ​​the gate circuit (Gate IC) and Fan-out (Fan-out) wiring space, so as to realize the design of narrow frame, improve production capacity and yield rate. [0003] GOA circuits are widely used on display panels, including small-size mobile phone GOA models, medium and large-size GOA models, high-stability industr...

Claims

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Application Information

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IPC IPC(8): G09G3/20G11C19/28G09G3/36G09G3/3225
CPCG09G3/20G09G3/3225G09G3/3648G11C19/28G09G2310/0286G09G2310/08G09G2300/0408G09G3/3266G09G3/3677G09G2320/0219G09G2310/0267G09G2310/061G09G2300/0809G11C19/287
Inventor 米磊王世君薛艳娜
Owner BOE TECH GRP CO LTD
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