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

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3 Author(s)
Shin, A. ; Korea Univ., Seoul ; Jong Chan Choi ; Sung, Man Young

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.

Published in:

Semiconductor Device Research Symposium, 2007 International

Date of Conference:

12-14 Dec. 2007

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