Title :
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
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;
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
DOI :
10.1109/ISDRS.2007.4422329
