Shift register, grid drive circuit and display device

A technology for shift registers and gates, which is applied in the field of gate drive circuits, display devices, and shift registers, and can solve problems such as weak discharge capability of switching transistors, large scanning signal noise, and reduced voltage of pull-down nodes.
CN105469738AInactive Publication Date: 2016-04-06BOE TECH GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
BOE TECH GRP CO LTD
Publication Date
2016-04-06
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a shift register, a grid drive circuit and a display device. The shift register comprises an input module, a first reset module, a first control module, a second control module, a node voltage control module and an output module which are in cooperation; the node voltage control module and the first control module form a bootstrap circuit, allowing the voltage of a second node to be the same with the voltage of the effective pulse signal of a first clock signal terminal; accordingly, the first control module can timely and effectively work under the control of the second node, allowing the driving signal output terminal of the shift register to timely output the scanning signal opposite to the electric potential of the effective pulse signal of an input signal terminal after output, thereby improving the output stability of the shift register, furthermore reducing the noise of the scanning signal outputted by the driving signal output terminal, and making scanning signal output more stable.
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Description

technical field

[0001] The invention relates to the field of display technology, in particular to a shift register, a gate drive circuit and a display device. Background technique

[0002] With the rapid development of display technology, the display panel is more and more developed towards the direction of high integration and low cost. Among them, the array substrate line drive (GateDriveronArray, GOA) technology integrates the thin film transistor (ThinFilmTransistor, TFT) gate switch circuit on the array substrate of the display panel to form a scan drive for the display panel, so that the gate integrated circuit ( Integrated Circuit (IC) bonding (Bonding) area and fan-out (Fan-out) area wiring space can not only reduce product cost in terms of material cost and manufacturing process, but also make the display panel symmetrical on both sides and narrow frame In addition, this integration process can also save the Bonding process in the direction of the gate scanning lin...

Claims

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