Title :
An Accurate and Fast Current-Biased Voltage-Programmed AMOLED Pixel Circuit With OLED Biased in AC Mode
Author :
Cuicui Wang ; Chuanli Leng ; Longyan Wang ; Wengao Lu ; Shengdong Zhang
Author_Institution :
Inst. of Microelectron., Peking Univ., Beijing, China
Abstract :
A current-biased voltage-programmed (CBVP) pixel circuit for active-matrix organic light-emitting diode (AMOLED) displays is proposed. The pixel circuit can not only ensure an accurate and fast compensation for the threshold voltage variation and degeneration of the driving TFT and the OLED, but also provide the OLED with a negative bias during the programming period. The negative bias prevents the OLED from a possible light emitting during the programming period and potentially suppresses the degradation of the OLED.
Keywords :
compensation; organic light emitting diodes; thin film transistors; AC mode; OLED bias; active matrix organic light emitting diode; current biased voltage programmed AMOLED pixel circuit; driving TFT degeneration suppression; threshold voltage variation compensation; Active matrix organic light emitting diodes; Capacitance; Degradation; Programming; Thin film transistors; Threshold voltage; AC driving; Active-matrix organic light-emitting diode (AMOLED); current-biased voltage-programmed (CBVP); pixel circuit; thin-film transistors (TFTs);
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2015.2423704
