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

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

A technology for a pixel circuit and a display substrate is applied in the fields of display substrates, pixel circuits and driving methods thereof, and display devices, and can solve the problem of inability to achieve high-contrast display, the limitation of the difference between the maximum value and the minimum value of the voltage across the light-emitting device, and the upper limit of the contrast ratio. and other problems to achieve the effect of high contrast display

Active Publication Date: 2019-11-19
BOE TECH GRP CO LTD
View PDF9 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In some application scenarios such as near-eye display systems, the size and specifications of thin-film transistors in OLED products are subject to certain restrictions. The difference between the maximum value and the minimum value of the voltage is also limited accordingly, which means that there is an upper limit on the contrast that can be achieved, and high contrast display cannot be achieved

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047]In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present disclosure, not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative effort fall within the protection scope of the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or similar words mean t...

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 pixel circuit and a driving method thereof, a display substrate and a display device, and belongs to the field of display. The pixel circuit comprises a grid signal end, a data signal end, a switch signal end and a voltage division control signal end. The pixel circuit further comprises a current source module; the current source module is configured to update the stored driving voltage according to the voltage at the data signal end when the grid signal end receives a grid driving signal and output a light-emitting current is output according to the stored driving voltage when the switch signal end receives a light-emitting control signal, wherein the current value of the light-emitting current is in positive correlation with the voltage value of the driving voltage; and the voltage division module is configured to adjust the equivalent resistance value of the voltage division module in the output path of the light-emitting current according to the signal received at the voltage division control signal end. High-contrast display of an OLED product in a low-voltage process can be realized.

Description

technical field [0001] The present disclosure relates to the display field, and in particular to a pixel circuit and a driving method thereof, a display substrate, and a display device. Background technique [0002] Organic Light-Emitting Diode (OLED) display is a display product mainly made of organic light-emitting diodes. With its advantages of high brightness, rich colors, low driving voltage, fast response and low power consumption, it has been Become one of the current mainstream display products. OLED is an all-solid-state device with good shock resistance and wide operating temperature range, so it is suitable for military and special applications; System volume, especially for near-eye display systems. [0003] In some application scenarios such as near-eye display systems, the size and specifications of thin-film transistors in OLED products are subject to certain restrictions. The difference between the maximum value and the minimum value of the voltage is also...

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): G09G3/3208
CPCG09G3/3208G09G3/3233G09G2320/066G09G2300/0838G09G2300/0819G09G2300/0861G09G2300/0842G09G2300/0885G09G2320/0633G09G3/3266G09G3/3275G09G2320/0686
Inventor 杨盛际董学陈小川王辉卢鹏程
Owner BOE TECH GRP 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