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

A pixel driving circuit and method, array substrate and display device

A technology of pixel drive circuit and drive unit, which is applied to static indicators, instruments, etc., can solve problems such as uneven brightness and affecting image display effect, and achieve the same brightness and good display effect

Active Publication Date: 2018-06-05
BOE TECH GRP CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of uneven brightness of AMOLED in the prior art and affecting the display effect of the entire image, an embodiment of the present invention provides a pixel driving circuit and method, an array substrate and a display device

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
  • A pixel driving circuit and method, array substrate and display device
  • A pixel driving circuit and method, array substrate and display device
  • A pixel driving circuit and method, array substrate and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] 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.

[0045] An embodiment of the present invention provides a pixel driving circuit for driving an organic light emitting diode to emit light, see figure 1 , the pixel driver circuit includes:

[0046] A charge storage unit 1, the first terminal of the charge storage unit 1 is connected to a power supply voltage signal;

[0047] The drive unit 2, the control terminal of the drive unit 2 is connected to the second terminal of the charge storage unit 1, and is used to generate a drive for driving the organic light emitting diode (OLED) to emit light when the voltage at the second terminal of the charge storage unit 1 is greater than the threshold voltage of the drive unit 1 current;

[0048] The reset unit 3 is connected to the second end o...

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 compensation circuit, an array substrate and a display device, belonging to the technical field of semiconductors. The pixel compensation circuit includes a charge storage unit, the first end of which is connected to a power supply voltage signal; a drive unit, the control end of which is connected to the second end of the charge storage unit, for the voltage at the second end of the charge storage unit to be greater than the threshold of the drive unit Generate a driving current to drive the OLED to emit light when the voltage is applied; the reset unit is connected to the second end of the charge storage unit, and is used to write the voltage of the initial voltage signal into the second end of the charge storage unit in the reset phase; the data writing unit is connected to the second end of the charge storage unit. The second end of the charge storage unit is connected to write the voltage of the data voltage signal and the threshold voltage of the drive unit into the second end of the charge storage unit in the data writing phase; the light emission control unit is connected to the drive unit for In the light-emitting stage, the power supply voltage signal is controlled to be written into the drive unit to generate a drive current. The invention ensures correct writing of data.

Description

technical field [0001] The present invention relates to the technical field of semiconductors, in particular to a pixel driving circuit and method, an array substrate and a display device. Background technique [0002] Active Matrix Organic Light Emitting Diode (AMOLED) display is a display technology used in TVs and mobile devices. It is sensitive to power consumption due to its low power consumption, low cost, and large size. It has broad application prospects in portable electronic devices. [0003] The organic light emitting diode (Organic Light Emitting Diode, referred to as OLED) in AMOLED can emit light and is driven by the driving current generated by the thin film transistor (Thin Film Transistor, referred to as TFT), but as time changes, the threshold voltage of TFT may change , resulting in the input of the same voltage to the TFT, the driving current generated by the TFT is inconsistent, which leads to different brightness of each OLED, and the uneven brightness...

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): G09G3/32
CPCG09G3/3233G09G2300/0819G09G2300/0861G09G2310/0251G09G2310/0262G09G2320/043G09G3/3258G09G2300/0426G09G2320/0214G09G2320/0233G09G2320/0626G09G2330/023
Inventor 段立业王俪蓉李重君钟杰兴林俊杰
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