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Shifting register, driving method thereof, GOA circuit and display device

A shift register and circuit technology, applied to GOA circuits, display devices, shift registers and their driving fields, can solve the problems of insufficient gate signal output and uneven display, so as to avoid uneven display and solve the problem of gate signal output. insufficient effect

Active Publication Date: 2016-06-08
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a shift register and its driving method, a GOA circuit and a display device, which solves the problem of uneven display caused by insufficient gate signal output of large-size GOA display products

Method used

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  • Shifting register, driving method thereof, GOA circuit and display device
  • Shifting register, driving method thereof, GOA circuit and display device
  • Shifting register, driving method thereof, GOA circuit and display device

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0028] The GOA circuit includes several cascaded shift registers, figure 1 Shown is the output control section of a conventional shift register. The traditional shift register controls the first thin film transistor M1 to achieve output through a pull-up node (PU point) (the signal at the PU point includes information about when M1 is turned on and when an effective voltage is output). The present invention improves the shift register circuit, so that the shift register unit itself adds a pre-charge function, that is, the signal output by the shift register provided by the embodiment of the present invention has a pre-charge function. Specifically, the control signa...

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Abstract

The invention discloses a shifting register, a driving method thereof, a GOA circuit and a display device and relates to the field of display. The problem that a grid signal of a large-size GOA display product is output deficiently can be solved. The shifting register used for the GOA circuit comprises a pull-up node, a capacitor and an output control module and further comprises a pre-charge module. The output control module comprises a first thin film transistor, wherein the control end of the first thin film transistor and the first end of the capacitor are connected to the pull-up node, the first end of the first thin film transistor inputs a first clock signal, and the second end of the first thin film transistor is connected to the second end of the capacitor. The pre-charge module is used for receiving the signal of the pull-up node, and outputting pre-charge voltage which is the same as effective voltage in polarity to the output end of the shifting register before the shifting register outputs the effective voltage.

Description

technical field [0001] The invention relates to the display field, in particular to a shift register and its driving method, a GOA circuit and a display device. Background technique [0002] The GateDriveronArray (GOA) technology is a process technology that directly integrates gate driver ICs (Gatedriver 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 area of ​​the gate circuit (GateIC) and fan. (Fan-out) wiring space, so as to realize the design of narrow frame, improve production capacity and yield rate. [0003] At present, GOA technology is mostly used in small and medium-sized display products. When it is applied to large-sized display products, the gate signal output is insufficient, and the signal delay problem is obvious, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C19/28G02F1/1345G09G3/36
CPCG02F1/13454G09G3/3674G11C19/28G09G3/20G09G2300/0408G09G2310/0267G09G2310/0286G11C19/184
Inventor 王俊伟
Owner BOE TECH GRP CO LTD
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