Design of an organic TFT pixel electrode circuit with enhanced current programming method for active-matrix OLED displays

Author

Shin, Aram ; Choi, Jong Chan ; Sung, Man Young

Author_Institution

Korea Univ., Seoul

fYear

2007

fDate

12-14 Dec. 2007

Firstpage

1

Lastpage

2

Abstract

This paper presents a novel driving scheme for AMOLED displays using a current mirror structure. For future low cost displays, the results are based on soluble-processed OTFTs. Since the characteristics of soluble-processed OTFTs are poor compared to pentacene-based OTFTs, the output current levels are controlled by adjusting the ratio of device dimensions. The simulation results show reliable uniformity between input data and OLED current. Also, successful compensation of OLED current due to threshold voltage variation is also shown.

Keywords

LED displays; current mirrors; organic light emitting diodes; thin film transistors; AMOLED displays; current mirror structure; enhanced current programming; organic light emitting diodes; organic thin film transistors; pixel electrode circuit; threshold voltage variation; Active matrix organic light emitting diodes; Active matrix technology; Circuits; Costs; Electrodes; Flat panel displays; Mirrors; Organic light emitting diodes; Organic thin film transistors; Thin film transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Device Research Symposium, 2007 International

Conference_Location

College Park, MD

Print_ISBN

978-1-4244-1892-3

Electronic_ISBN

978-1-4244-1892-3

Type

conf

DOI

10.1109/ISDRS.2007.4422329

Filename

4422329