Supercharge Your Innovation With Domain-Expert AI Agents!

Pixel circuit, driving method thereof, and display device

A technology of pixel circuits and driving nodes, applied in static indicators, instruments, etc., can solve the problems of poor compensation effect and low precision

Active Publication Date: 2019-04-02
BOE TECH GRP CO LTD
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the driving process of the pixel circuit, due to the unstable potential of some nodes in the circuit, the compensation method in the related art is used to compensate the Vth of the driving transistor with low accuracy and poor compensation effect.

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
  • Pixel circuit, driving method thereof, and display device
  • Pixel circuit, driving method thereof, and display device
  • Pixel circuit, driving method thereof, and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0075] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0076] 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 embodiment of the present invention, the source is referred to as the first stage, and the drain is referred to as the second stage. 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 th...

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 pixel circuit, a driving method thereof, and a display device, belonging to the field of display technology. The pixel circuit includes: a switch module, a drive module, a light emitting module and a detection module, the drive module includes a drive transistor, the first pole of the drive transistor is connected to the switch node, and the second pole is connected to the drive node; the switch module is used to control the switch The conduction or shutdown between the node and the power signal terminal. In the driving process of the pixel circuit, the first power signal terminal and the switch node can be controlled to be turned off during the reset phase and the data writing phase, so as to prevent the first power signal output from the first power signal terminal from being affected by the driving transistor. The potential of the driving node, so as to ensure that the driving node can be effectively reset in the reset phase, and ensure the accuracy of the data voltage written to the driving transistor in the data writing phase, thus effectively improving the accuracy and effect of compensation.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit, a driving method thereof, and a display device. Background technique [0002] A pixel circuit of an organic light emitting diode (English: Organic Light Emitting Diode; OLED for short) is a circuit structure that controls a driving current flowing through an OLED by driving a transistor, and is mainly used in a display device. Since the magnitude of the driving current is related to the threshold voltage Vth of the driving transistor, in order to prevent the Vth of the driving transistor from drifting with time, it is necessary to compensate the Vth of the driving transistor during the driving process. [0003] In the related art, the compensation method of the driving transistor Vth generally includes two ways of internal compensation and external compensation. The internal compensation is to achieve Vth compensation by adding new thin film transistors...

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): G09G3/3208G09G3/3233
CPCG09G3/3208G09G3/3233G09G2320/029G09G2320/043G09G2300/0861G09G3/3258G09G3/3266G09G3/3275G09G2300/0809
Inventor 李全虎
Owner BOE TECH GRP CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com