A high-speed driver for current-programmed active-matrix OLED displays

Author

Jafarabadiashtiani, Shahin ; Servati, Peyman ; Nathan, Arokia

Author_Institution

Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada

fYear

2005

Firstpage

247

Lastpage

250

Abstract

This paper proposes a new driving technique for improving settling time in current-programmed active-matrix organic light-emitting diode (AMOLED) pixel circuits. Here, a current feedback along with a second generation current conveyer is employed as the driver to cancel the effect of parasitic line capacitances. Circuit-level simulation using a high-voltage CMOS process for external driver and a VerligA model for amorphous silicon thin film transistors shows more than 8 times reduction in programming time of a typical current programmed pixel circuit for programming current of 100nA.

Keywords

CMOS analogue integrated circuits; LED displays; current conveyors; driver circuits; high-speed integrated circuits; organic light emitting diodes; programmable circuits; 100 nA; AMOLED pixel circuits; VerligA model; current feedback; current programmed pixel circuit; current-programmed active-matrix OLED displays; high-speed driver circuits; high-voltage CMOS process; organic light emitting diodes; organic light-emitting diodes; second generation current conveyers; Active matrix organic light emitting diodes; Active matrix technology; CMOS process; Circuit simulation; Driver circuits; Feedback; Flat panel displays; Organic light emitting diodes; Parasitic capacitance; Semiconductor device modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

IEEE-NEWCAS Conference, 2005. The 3rd International

Print_ISBN

0-7803-8934-4

Type

conf

DOI

10.1109/NEWCAS.2005.1496757

Filename

1496757