An Accelerative Current-Programming Method for AM-OLED

Shinya ONO  Yoshinao KOBAYASHI  

IEICE TRANSACTIONS on Electronics   Vol.E88-C   No.2   pp.264-269
Publication Date: 2005/02/01
Online ISSN: 
DOI: 10.1093/ietele/e88-c.2.264
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Displays
organic light-emitting diode,  active matrix,  thin film transistor,  pixel circuit,  

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In this paper, we describe an accelerative current-programming method for active matrix OLED (AM-OLED) display. This new method uses common source configuration, "Acceleration Control" line and some mechanisms to prevent the programming current from flowing through OLED device. It would solve the basic problem of the current-programming pixel circuit: a long programming period, especially at the dark gray-level. The proposed method accelerates the current programming process at any gray levels, and it would be the solution for the problem.