Title :
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.
fDate :
5/1/2007 12:00:00 AM
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);
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2007.894608
