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Shift register, gate drive circuit and display device

A shift register and capacitor technology, which is applied in the field of gate drive circuits, display devices, and shift registers, can solve the problems of unfavorable narrow frame implementation and large numbers.

Active Publication Date: 2019-08-16
HEFEI BOE ZHUOYIN TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gate drive unit includes two shift registers and a signal combining circuit, which requires a large number of TFTs, which is not conducive to the realization of narrow borders.

Method used

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  • Shift register, gate drive circuit and display device
  • Shift register, gate drive circuit and display device
  • Shift register, gate drive circuit and display device

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Embodiment Construction

[0057] In order for those skilled in the art to better understand the technical solution of the present invention, a shift register, a gate driving circuit and a display device provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0058] It should be noted that the transistors in the present invention may be thin film transistors or field effect transistors or other switching devices with the same characteristics. A transistor generally includes three poles: a gate, a source, and a drain. The source and drain in a transistor are symmetrical in structure, and the two can be interchanged as needed. In the present invention, the gate electrode refers to the gate of the transistor, one of the first electrode and the second electrode is the source, and the other is the drain.

[0059] In addition, according to the characteristics of transistors, transistors can be divided into N-type transistors and P-type transistors; wh...

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Abstract

The invention discloses a shift register, a gate drive circuit and a display device. The shift register comprises a display pre-charging reset module, a sensing cascade module, a sensing pre-chargingreset module, a pull-down control module and an output module, wherein the display pre-charging reset module, the sensing cascade module and the sensing pre-charging reset module share the same pull-down control module and output module; the output module is connected with at least one signal output end; the output module comprises output sub-modules which are in one-to-one correspondence with thesignal output ends; and the output sub-module is used for writing the driving clock signal provided by the corresponding driving clock signal end into the corresponding signal output end in responseto the control of the voltage of the pull-up node in the effective level state in the display output stage and the sensing output stage. According to the technical scheme, the number of TFTs needing to be set can be effectively reduced while double-pulse driving signals are output.

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] In the prior art, a thin film field effect transistor (Thin Film Transistor, TFT for short) is integrated on the array substrate by using Gate Driver on Array (GOA for short) technology to control the gate lines in the display panel. Scan driving, so that the part of the gate driver IC can be saved, which is conducive to the realization of narrow borders. [0003] For a display panel with an external compensation function, it is required that each gate drive unit in the gate drive circuit (consisting of multiple gate drive units cascaded) can not only output and control the display switching transistor to turn on in the display drive stage The driving signal can also output the driving signal for controlling the conduction of the sensing switching transistor during the sensing phase, that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3266G11C19/28
CPCG09G3/3266G11C19/28G09G2310/0286G09G3/2092G09G2310/061G09G2310/08
Inventor 冯雪欢李永谦
Owner HEFEI BOE ZHUOYIN TECH CO LTD
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