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

Volume

11

Issue

7

fYear

2015

fDate

Jul-15

Firstpage

615

Lastpage

619

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);

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2015.2423704

Filename

7088540