Title :
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
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);
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2014.2332643
