A 3-TFT Current-Programmed Pixel Circuit for AMOLEDs

200556 citationsJournal Article

Authors

Shahin Jafarabadi Ashtiani · University of Waterloo

Peyman Servati · IGNIS Innovation (Canada)

Denis Striakhilev · University of Waterloo

Abstract

Current programmed circuits have demonstrated threshold voltage V/sub TH/ shift compensation to provide a stable drive current to the organic light-emitting diode (OLED). However, the degree of stability of drive current depends critically on the dynamic behavior of the circuit. This paper examines the dynamic behavior of a 3-TFT current programmed pixel and analyzes the impact of V/sub TH/ shift on the OLED drive current. The pixel circuit was implemented in amorphous silicon technology and lifetime tests show a 11% current degradation at 700 h.

Topics & Keywords

Thin-Film Transistor Technologies Organic Light-Emitting Diodes Research Image and Video Quality Assessment

UN Sustainable Development Goals

Affordable and clean energy

Publication Details

Published in: IEEE Transactions on Electron Devices

Volume 52, Issue 7, pp. 1514-1518

DOI: 10.1109/ted.2005.850615

Field-Weighted Citation Impact: 5.34