Parallel Addressing Scheme for Voltage-Programmed Active-Matrix OLED Displays

Author

Chaji, G.Reza ; Nathan, Arokia

Author_Institution

Dept. of Electr. & Comput., Waterloo Univ., Ont.

Volume

54

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

1095

Lastpage

1100

Abstract

This paper presents a novel parallel addressing scheme for voltage-programmed active-matrix organic light-emitting diode (OLED) displays which provides high precision recovery of the threshold voltage shift. As a result, the uniformity over the panel is significantly improved. In addition, a new pixel circuit is presented that is capable of providing a predictably higher current as the pixel ages, so as to compensate for the OLED luminance degradation

Keywords

LED displays; amorphous semiconductors; organic light emitting diodes; thin film transistors; AMOLED; OLED luminance degradation; active-matrix organic light-emitting diode; hydrogenated amorphous silicon; parallel addressing scheme; thin-film transistor; voltage-programmed active-matrix OLED displays; Active matrix organic light emitting diodes; Active matrix technology; Amorphous silicon; Circuits; Current control; Flat panel displays; Lifetime estimation; Organic light emitting diodes; Thin film transistors; Threshold voltage; Active-matrix organic light-emitting diode (AMOLED); hydrogenated amorphous silicon (a-Si:H); thin-film transistor (TFT); threshold voltage shift ( $V_{T}$ shift); voltage-programmed pixel circuit (VPPC);

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2007.894608

Filename

4160092