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

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

A pixel circuit and circuit technology, applied in static indicators, instruments, etc., can solve problems such as low carrier recombination efficiency and aging of organic light-emitting elements, and achieve the effects of improving aging problems, enhancing recombination efficiency, and prolonging service life

Active Publication Date: 2013-11-27
BOE TECH GRP CO LTD +1
View PDF6 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a pixel circuit and its driving method, an array substrate and a display device, so as to solve the problem in the prior art that the carrier recombination efficiency is low when driving organic light-emitting elements to emit light, which easily leads to the aging of organic light-emitting elements

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 of the present invention provides a pixel circuit, such as figure 1 As shown, the pixel circuit includes a driving subcircuit 1 , a control subcircuit 2 and a light emitting subcircuit 3 .

[0045]The light-emitting sub-circuit 3 includes a first organic light-emitting element and a second organic light-emitting element. In the embodiment of the present invention, the first organic light-emitting element and the second organic light-emitting element are preferably OLEDs. The OLED is used as an example for illustration below, but it is not limited. Indicated by D1 and D2, the first OLED and the second OLED of the light-emitting sub-circuit 3 are respectively connected to the driving sub-circuit 1, and the control sub-circuit 2 is connected to the driving sub-circuit 1 for controlling the driving sub-circuit 1 to drive the first OLED and the second OLED. In the same display stage of the second OLED, one of them is forward-biased to emit light, and the other i...

Embodiment 2

[0050] Embodiment 2 of the present invention describes in detail the composition of the pixel circuit provided in Embodiment 1 in combination with practical applications.

[0051] The first organic light-emitting element and the second organic light-emitting element included in the light-emitting sub-circuit of the pixel circuit provided in the embodiment of the present invention are still described by taking the first OLED and the second OLED as examples. In the embodiment of the present invention, the driving sub-circuit 1 includes the first The driving sub-circuit 11 and the second driving sub-circuit 12, the first driving sub-circuit 11 is connected with the anode of the first OLED and the cathode of the second OLED, and drives the first OLED to emit light with a forward bias, and the second OLED does not reverse bias Lighting: the second driving sub-circuit 12 is connected to the cathode of the first OLED and the anode of the second OLED, and drives the first OLED to be re...

Embodiment 3

[0069] Embodiment 3 of the present invention provides a driving method of the pixel circuit involved in Embodiment 1 or Embodiment 2. In this method, in the first display stage, the control subcircuit controls the driving subcircuit to drive the first organic light emitting element and the second organic light emitting element. One of the organic light-emitting elements is forward-biased to emit light, and the other is reverse-biased to not emit light;

[0070] In the second display stage adjacent to the first display stage, the control subcircuit controls the driving subcircuit to drive the first organic light emitting element and the second organic light emitting element to switch the bias state.

[0071]Preferably, in the embodiment of the present invention, the control subcircuit controls the drive subcircuit to drive the same organic light-emitting element for the same forward bias and reverse bias time, and for the same organic light-emitting element, the forward bias 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 pixel circuit and a driving method, an array substrate and a display device of the pixel circuit to resolve the problem of ageing of an organic light-emitting component. The pixel circuit comprises a driving sub-circuit, a control sub-circuit and a light-emitting sub-circuit, wherein the light-emitting sub-circuit comprises a first organic light-emitting element and a second organic light-emitting element; the first organic light-emitting element and the second organic light-emitting element are connected with the driving sub-circuit; the control sub-circuit is connected with the driving sub-circuit and is used for controlling the driving sub-circuit to drive one of the first organic light-emitting element and the second organic light-emitting element to emit light in the forward direction in a bias mode in the same display stage and to drive the other of the first organic light-emitting element and the second organic light-emitting element to emit light in the reverse direction in a bias mode, and a bias state is switched in adjacent display stages. According to the pixel circuit and the driving method, the array substrate and the display device of the pixel circuit, built-in electric fields formed inside the organic light-emitting elements can be eliminated, current carrier recombination efficiency is enhanced, and the ageing problem of the organic light-emitting elements is improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit and a driving method thereof, an array substrate and a display device. Background technique [0002] AMOLED (Active Matrix Organic Light Emitting Diode, active light-emitting diode display) is more and more widely used because it can meet the requirements of high resolution and large size of the display. [0003] The ability of AMOLED to emit light is generated by a thin film transistor (Thin Film Transistor, TFT) in a saturated state to generate a driving current and drive an organic light emitting element, such as an OLED (Organic Light Emitting Diode, organic light emitting diode) to emit light. OLED has low power consumption, high brightness, The advantages of low cost, wide viewing angle, and fast response speed have attracted much attention, and have been widely used in the field of organic light-emitting technology. [0004] When driving an organi...

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): G09G3/32
CPCG09G3/3233G09G2310/0256G09G2310/08G09G2320/043
Inventor 祁小敬青海刚
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