A 3-TFT current-programmed pixel circuit for AMOLEDs

被引：41

作者：

Ashtiani, SJ ^{[1
]}

Servati, P

Striakhilev, D

Nathan, A

机构：

[1] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada

[2] IGNIS Innovat Inc, Waterloo, ON N2L 3G1, Canada

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2005年 / 52卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

active-matrix organic light-emitting diode (AMOLED); amorphous silicon (a-Si); pixel circuit; thin-film transistor (TFT);

D O I：

10.1109/TED.2005.850615

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Current programmed circuits have demonstrated threshold voltage V-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-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.

引用

页码：1514 / 1518

页数：5

共 7 条

[1] Current-source a-Si:H thin-film transistor circuit for active-matrix organic light-emitting displays [J].