GOA circuit and display panel

A circuit and potential technology, applied in the field of GOA circuits and display panels, can solve the problems of GOA circuit failure, abnormal scanning signal output, and easy offset of threshold voltage.

Active Publication Date: 2021-04-09
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The GOA circuit includes a plurality of cascaded GOA units, and each level of GOA unit includes a pull-up control module, a pull-up module, a bootstrap capacitor Cb, a downlink module, a pull-down module, and a pull-down maintenance module, wherein the pull-up control module and the pull-up The modules include a thi

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 and display panel
  • GOA circuit and display panel
  • GOA circuit and display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0027] In all embodiments of the present application, in order to distinguish the two poles of the TFT except the gate, one pole is called the source, and the other pole is called the drain. Since the source and drain of a thin film transistor are symmetrical, their source and drain are interchangeable. According to the form in the attached drawing, it is stipulated that the middle terminal of the thin film transistor is the gate, the signal input terminal is the source, and the...

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 and a display panel, and the GOA circuit enables a first pull-up control module and a first pull-up module to work at the same time or enables a second pull-up control module and a second pull-up module to work at the same time under the control of a first low-frequency signal and a second low-frequency signal. Therefore, the first pull-up control module and the second pull-up control module can work alternately, and the first pull-up module and the second pull-up module can work alternately. Compared with a pull-up control module and a pull-up module of a GOA circuit in the prior art, the first pull-up control module and the first pull-up module in the GOA circuit, and the second pull-up control module and the second pull-up module in the GOA circuit only need to work for a part of time; therefore, the problem of threshold voltage drift caused by long-time work of the pull-up control module and the thin film transistor of the pull-up module can be suppressed, the GOA circuit failure caused by abnormal output of the scanning signal is avoided, the display effect of the display panel is improved, and the abnormal phenomenon of a picture is prevented.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a GOA circuit and a display panel. Background technique [0002] GOA (Gate Driver On Array) technology refers to integrating the gate driver circuit of the display panel on the glass substrate to realize the scanning drive of the display panel. GOA technology can reduce the bonding process of external ICs and reduce product costs. It is suitable for Make narrow bezel display products. [0003] The GOA circuit includes a plurality of cascaded GOA units, and each level of GOA unit includes a pull-up control module, a pull-up module, a bootstrap capacitor Cb, a downlink module, a pull-down module, and a pull-down maintenance module, wherein the pull-up control module and the pull-up The modules include a thin-film transistor respectively. When the GOA circuit is working for a long time, the thin-film transistor of the pull-up control module and the thin-film transistor o...

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
IPC IPC(8): G09G3/20
CPCG09G3/20
Inventor 奚苏萍
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap