Unlock instant, AI-driven research and patent intelligence for your innovation.

OLED pixel compensation circuit and OLED pixel driving method

A compensating circuit and compensating capacitor technology, applied in instruments, static indicators, etc., can solve the problems of OLED brightness changes and other problems, and achieve the effect of reducing the impact

Active Publication Date: 2018-02-23
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an OLED pixel compensation circuit and an OLED pixel driving method, which can not only compensate the threshold voltage V of different driving transistors th Inconsistency leads to the problem of uneven OLED display images. Further, when the OLED pixel compensation circuit is in the display state, the OLED pixel compensation circuit can also solve the problem that the driving voltage of the driving transistor changes and the OLED brightness changes.

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
  • OLED pixel compensation circuit and OLED pixel driving method
  • OLED pixel compensation circuit and OLED pixel driving method
  • OLED pixel compensation circuit and OLED pixel driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0040] Such as figure 2 As shown, the OLED pixel compensation circuit of the present invention includes: a load driving module 10, a threshold compensation module 20, and an initialization module 30, where:

[0041] Threshold compensation module 20 and load drive module 10, data signal terminal D m And the first scanning end S n connection. The threshold compensation module 20 is used to observe the threshold voltage V of the load driving module 10 th And controlled by the first scanning end S n And the receiving data signal terminal D m Data voltage, and then use the threshold voltage V th To compensate the data voltage to obtain the driving voltage and store it;

[0042] Load drive module 10 and light-emitting control terminal E n And the threshold compensation module 20 is connected. The load driving module 10 is used to be controlled by the light-e...

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 an OLED pixel compensation circuit and an OLED pixel driving method, comprising: a threshold compensation module, used to observe the threshold voltage of the load driving module and receive an external data voltage, and then use the threshold voltage to compensate the The data voltage is used to obtain a driving voltage and store it; a load driving module is used to receive the driving voltage output by the threshold compensation module and convert the driving voltage into a driving current for driving an organic light emitting diode. This method can not only compensate the influence of the change of the power supply voltage of the pixel compensation circuit on the brightness of the organic light emitting diode, but also reduce the influence of the leakage current of the transistor in the off state in the OLED pixel compensation circuit on the gate voltage of the drive transistor, thereby reducing Effect of leakage current of small transistors on image quality.

Description

Technical field [0001] The present invention relates to a pixel compensation circuit and a pixel driving method, in particular to a pixel compensation circuit and a pixel driving method used in an OLED display device. Background technique [0002] OLED displays have the advantages of small size, simple structure, autonomous light emission, high brightness, good image quality, large viewing angle, low power consumption and short response time, etc., which have attracted widespread attention and are likely to become the next generation display technology to replace liquid crystal. [0003] Although OLED displays have the above-mentioned advantages, many problems have also arisen during their application. For example, the variation of the material characteristics of the ThinFilm Transistor (TFT) used as a switch or driving element and the different degree of material aging will cause the panel display The phenomenon of unevenness. In addition, long-term use of the OLED will cause the...

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): G09G3/3291G09G3/3258G09G3/3233
Inventor 钟明达
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD