A Novel p-Type LTPS TFT Pixel Circuit Compensating for Threshold Voltage and Mobility Variations

Author

Yeonkyung Kim ; Yongchan Kim ; Hojin Lee

Author_Institution

MEMS Display & Sensor Lab., Soongsil Univ., Seoul, South Korea

Volume

10

Issue

12

fYear

2014

fDate

Dec. 2014

Firstpage

995

Lastpage

1000

Abstract

In this paper, we propose a novel voltage programmed pixel circuit with p-type low temperature polycrystalline silicon thin-film transistors (LTPS TFTs) for active-matrix organic light-emitting displays (AMOLEDs) with an enhanced electrical stability and uniformity. Through extensive numerical analysis based on experimental data of p-type LTPS TFT and OLED, we confirm that the proposed pixel circuit can compensate for both the mobility variation and threshold voltage shift of TFTs.

Keywords

LED displays; elemental semiconductors; organic light emitting diodes; silicon; thin film transistors; AMOLED; active-matrix organic light-emitting displays; enhanced electrical stability; mobility variation compensation; p-type LTPS TFT pixel circuit compensation; p-type low-temperature polycrystalline silicon thin-film transistors; threshold voltage shift; voltage-programmed pixel circuit; Active matrix organic light emitting diodes; Capacitors; Logic gates; Thin film transistors; Threshold voltage; Active-matrix organic light-emitting display (AMOLED); low-temperature polycrystalline silicon (LTPS); mobility variation; thin-film transistor (TFT);

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2014.2332643

Filename

6843359