A real time video data adjusting method for active matrix organic light emitting diode displays with high image quality

Author

Min, Ung-Gyu ; In, Hai-Jung ; Kwon, Oh-Kyong

Author_Institution

Dept. of Electron. & Commun. Eng., Hanyang Univ., Seoul, South Korea

Volume

55

Issue

4

fYear

2009

fDate

11/1/2009 12:00:00 AM

Firstpage

2372

Lastpage

2376

Abstract

A real time video data adjusting method for television applications of active matrix organic light emitting diode (AMOLED) displays with high image quality is proposed. The proposed method senses electrical characteristics of polycrystalline silicon (poly-Si) thin film transistors (TFTs) and organic light emitting diode (OLED) of pixels and compensates nonuniform luminance due to the electrical characteristic variations of TFTs and the degradation of OLEDs by adjusting video data. The sensing and compensation operations are performed while the image is displayed on the screen. Experimental results show that the luminance error is improved from 92.1% to 0.8% when the proposed adjusting method is used. The proposed method is demonstrated on 14.1-inch AMOLED display panel.

Keywords

LED displays; brightness; luminescent devices; thin film devices; AMOLED; OLED; TFT; active matrix organic light emitting diode displays; crystalline silicon thin film transistors; high image quality; luminance error; organic light emitting diode; real time video data adjusting method; Active matrix organic light emitting diodes; Aging; Capacitors; Electric variables; Flat panel displays; Image quality; Organic light emitting diodes; TV; Thin film transistors; Threshold voltage; Light-emitting diode displays, thin film transistors, compensation, flat panel displays;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2009.5373812

Filename

5373812