Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

GOA circuit, display panel and display device

A circuit and potential technology, which is applied in the field of display panels, display devices, and GOA circuits, can solve the problems of inability to charge and GOA circuits unable to output normally.

Active Publication Date: 2019-07-05
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The role of the pull-up control module in the GOA circuit is to transmit the high potential to the first node Q point and maintain the high potential of the Q point. However, the TFT in the pull-up control module is subjected to positive stress (stress), so that the TFT The Vth of the TFT is positively biased, the Vth of the TFT is positively biased, and the Q point cannot be charged to the highest potential, making the GOA circuit unable to output normally

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
  • GOA circuit, display panel and display device
  • GOA circuit, display panel and display device
  • GOA circuit, display panel and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar units are denoted by the same reference numerals.

[0029] Such as figure 1 As shown, the existing GOA circuit includes m cascaded GOA units, and the nth level GOA unit includes: a pull-up control module 100', a pull-up module 200, a pull-down module 300, a pull-down maintenance module 400, and also includes a storage capacitor C1. where m≥n≥1.

[0030] The pull-up control module 100 is used to pull up the potentia...

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 provides a GOA circuit, a display panel and a display device, and the GOA circuit comprises: an nth GOA unit which comprises a pull-up control module which is used for pulling up the potential of a first node; a control unit including a control thin film transistor, wherein the drain electrode of the control thin film transistor is connected with the first node, and the source electrode of the pull-up thin film transistor is connected to the n-1th level scanning signal; a voltage stabilizing unit which is used for eliminating the influence of the threshold voltage of the controlthin film transistor on the first node potential, wherein the voltage stabilizing unit is connected with the grid electrode of the control thin film transistor; a pull-up module which is used for pulling up the potential of the output end; a pull-down module which is used for pulling down the potentials of the first node and the output end; and the pull-down maintaining module is used for maintaining the potential of the first node when the first node is at a low potential. According to the GOA circuit, the display panel and the display device, the high potential of the Q point can reach the preset value, and the situation that the GOA circuit cannot normally output is avoided.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of display technology, in particular to a GOA circuit, a display panel and a display device. [0003] 【Background technique】 [0004] At present, the driving of the scanning lines of the display panel (such as the active-matrix organic light-emitting diode panel (AMOLED, Active-matrixorganic light-emitting diode) is realized by an external integrated circuit, which can control the scanning lines of each row. It is opened step by step, and the GOA (Gate Driver on Array) method can be used to integrate the row scanning drive circuit on the substrate of the display panel, which can reduce the number of external ICs, thereby reducing the production cost of the display panel, and can realize the display device Narrow borders. [0005] IGZO (indium gallium zinc oxide) has high mobility and good device stability, so it is widely used in GOA circuits. [0006] The role of the pull-up control module in the GOA circui...

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 Applications(China)
IPC IPC(8): G09G3/3266G09G3/3225
CPCG09G3/3225G09G3/3266
Inventor 薛炎
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com