Unlock instant, AI-driven research and patent intelligence for your innovation.

A gate drive circuit, a touch display panel and a display device

A gate drive circuit and touch technology, which is applied in cathode ray tube indicators, static indicators, electrical digital data processing, etc., can solve the problems of large time intervals and potential attenuation of the shift register unit in the next stage, and achieve Improve stability, improve display performance effect

Active Publication Date: 2018-09-11
BOE TECH GRP CO LTD +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a gate drive circuit, a touch display panel, and a display device, which are used to solve the problem of insertion between gate turn-on signals output by two adjacent shift register units in the gate drive circuit. The time interval of the touch phase is relatively large, which causes the potential of the pull-up node of the shift register unit of the next stage to attenuate.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A gate drive circuit, a touch display panel and a display device
  • A gate drive circuit, a touch display panel and a display device
  • A gate drive circuit, a touch display panel and a display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] by Figure 4a The gate driving circuit shown is taken as an example to describe its working process, wherein, all switching transistors in the node potential compensation unit are N-type switching transistors; the potential of the reference signal terminal VSS is low potential; The potential of the touch switching terminal CS is high during the preset time period T1, and is low for the rest of the time; the corresponding input and output timing diagram is as follows: Figure 5a Shown, specifically, select as Figure 5a The first display stage D1, the second display stage D2, the third display stage D3, the preset time period T1 of the touch stage, and the period between the end of the preset time period and the end of the touch stage in the shown input and output timing diagram There are six stages of time period T2 and fourth display stage D4.

[0081] In the first display stage D1, A_n=0, Output_n+1=0, VSS=0, CS=0. Since A_n=0, the first switch transistor M1 is tur...

Embodiment 2

[0089] by Figure 4b The gate drive circuit shown is taken as an example to describe its working process, wherein, all switching transistors in the node potential compensation unit are P-type switching transistors; the potential of the reference signal terminal VSS is high potential; The potential of the touch switching terminal CS is low in the preset time period T1, and is high in the rest of the time; the corresponding input and output timing diagram is as follows Figure 5b Shown, specifically, select as Figure 5b The first display stage D1, the second display stage D2, the third display stage D3, the preset time period T1 of the touch stage, and the period between the end of the preset time period and the end of the touch stage in the shown input and output timing diagram There are six stages of time period T2 and fourth display stage D4.

[0090] In the first display phase D1, A_n=1, Output_n+1=1, VSS=1, CS=1. Since A_n=1, the first switch transistor M1 is turned off...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a gate drive circuit, a touch display panel and a display device. By arranging a pull-up node connected to a touch switching terminal between the pull-up nodes of a two-level shift register unit in at least one preset unit group, Node potential compensation unit, the node potential compensation unit is used to compensate for node potential compensation under the joint control of the pull-up node of the previous stage shift register unit and the touch switching terminal during the preset time period of the touch stage. The potential of the pull-up node of the subsequent shift register unit connected to the unit keeps the potential of the pull-up node of the subsequent shift register unit in a stable state within the preset time period of the touch stage, thereby improving the The stability of the gate turn-on signal potential output by the stage shift register unit can enable the TFTs in the pixel area of ​​the corresponding row to be turned on normally, thereby improving display performance.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a gate drive circuit, a touch display panel and a display device. Background technique [0002] In a flat panel display panel, a gate-on signal is usually provided to gates of thin film transistors (TFT, Thin Film Transistor) in the pixel region through a gate driving circuit. The gate driver circuit can be formed on the array substrate of the flat panel display panel through an array process, that is, the Gate Driver on Array (GOA) process of the array substrate. At the same time, it also saves the bonding (Bonding) area of ​​the gate integrated circuit (IC, Integrated Circuit) and the wiring space of the fan-out (Fan-out), so that the narrow border design can be realized . [0003] Existing gate drive circuits such as figure 1 As shown, there are multiple cascaded shift register units: SR(1), SR(2)...SR(n), SR(n+1)...SR(N-1), SR(N) (a total of N shift register unit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G06F3/041
CPCG06F3/0416G09G3/2085G09G3/2088G09G2230/00G09G3/3266G09G3/3677G09G2300/0408G06F3/0412G09G2310/0286G11C19/28G06F3/04184G09G5/003
Inventor 苏秋杰栗峰
Owner BOE TECH GRP CO LTD