Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Shift register unit, driving method, gate driving circuit and display device

A technology of a shift register and a control circuit is applied in the fields of a shift register unit, a driving method, a gate driving circuit and a display device, which can solve the problem that an output circuit cannot output a signal normally, and achieves the problem of improving charging efficiency and ensuring normal output. Effect

Active Publication Date: 2018-11-16
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
View PDF12 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a shift register unit, a driving method, a gate driving circuit and a display device, which can solve the problem in the related art that the output circuit cannot output signals normally due to insufficient charging of the pull-up node. The technical solution is as follows:

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
  • Shift register unit, driving method, gate driving circuit and display device
  • Shift register unit, driving method, gate driving circuit and display device
  • Shift register unit, driving method, gate driving circuit and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe in detail the embodiments of the present invention in conjunction with the accompanying drawings.

[0053] The transistors used in all the embodiments of the present invention can be thin film transistors or field effect transistors or other devices with the same characteristics, and the transistors used in the embodiments of the present invention are mainly switching transistors according to their functions in circuits. Since the source and drain of the switching transistor used here are symmetrical, the source and drain are interchangeable. In the embodiments of the present invention, the source is called the first pole, and the drain is called the second pole. According to the form in the accompanying drawings, it is stipulated that the middle terminal of the transistor is the gate, the signal input terminal is the source terminal, and...

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 shift register unit, a driving method, a gate driving circuit and a display device, and belongs to the technical field of display. The shift register unit includes an input circuit, an output circuit, a reset circuit, a first pull-down control circuit, a second pull-down control circuit, and a pull-down circuit. The first pull-down control circuit can control the potential of a pull-down control node to be an inactive potential under the control of a first input signal, prevent the second pull-down control circuit from controlling the potential of the pull-down node to be an effective potential under the control of a pull-down control node, prevent the pull-down circuit from affecting the charging of a pull-up node under the control of the pull-down node, and improve the charging efficiency of the pull-up node, so that when the refresh rate of the display device is high, the input circuit can also effectively charge the pull-up node. Moreover, since the firstpull-down control circuit directly controls the potential of the pull-down control node, the efficiency of controlling the pull-down node to the inactive potential is improved, and the problem that the pull-down circuit affects the potential of the pull-up node is further avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register unit, a driving method, a gate driving circuit and a display device. Background technique [0002] The shift register usually includes a plurality of cascaded shift register units, and each shift register unit is used to drive a row of pixel units. The plurality of cascaded shift register units can realize the step-by-step shifting of each row of pixel units in the display device. Line scan driver to display images. [0003] In the related art, the shift register unit mainly includes: an input circuit, an output circuit, a reset circuit and a pull-down circuit. In the input stage, the input circuit can charge the pull-up node according to the signal output by the shift register unit of the upper stage. When the pull-up node is charged to a certain potential, the pull-up node can control the pull-down circuit to pull down the potential of the pull-down node, th...

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): G09G3/36G09G3/3266G09G3/34G11C19/28
CPCG09G3/3266G09G3/344G09G3/3674G09G2310/0286G11C19/28
Inventor 谢勇贤王慧李佑路乔玄玄
Owner HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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