A new current mode pixel for active-matrix organic light-emitting diode displays

Author

Chao Liu ; Li Tian ; Ning Wang ; Hui Wang ; Songlin Feng

Author_Institution

Shanghai Adv. Res. Inst., Shanghai, China

fYear

2014

fDate

28-31 Oct. 2014

Firstpage

1

Lastpage

3

Abstract

A current mode pixel circuit and driving scheme for active-matrix organic light-emitting diode (AMOLED) display are proposed in this paper. The pixel consists of four thin film transistors (TFTs) and one capacitor. By using the boost function, a low data current can be programmed within a reasonable time and the slow driving drawback of current mode pixel can be eliminated. The simulation results show that driving current error is within 2.3% when threshold variation is ±0.5V and carrier mobility variation is ±10%. A 10nA driving current can be programmed within 80μs. The proposed pixel circuit can be used in small and medium size AMOLED display panels.

Keywords

LED displays; driver circuits; organic light emitting diodes; thin film transistors; AMOLED display panel; TFT; active matrix organic light emitting diode; boost function; capacitor; carrier mobility variation; current 10 nA; current mode pixel circuit; driving current error; driving scheme; thin film transistors; threshold variation; time 80 mus; Abstracts; Programming;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4799-3296-2

Type

conf

DOI

10.1109/ICSICT.2014.7021638

Filename

7021638