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Current-Writing Active-Matrix Circuit for Organic Light-Emitting Diode Display Using a-Si:H Thin-Film-Transistors

Reiji HATTORI, Tsutomu TSUKAMIZU, Ryusuke TSUCHIYA, Kazunori MIYAKE, Yi HE, Jerzy KANICKI

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Summary :

In this letter, we describe a four thin-film-transistor (TFT) pixel circuit based on hydrogenated amorphous silicon (a-Si:H) technology for the active-matrix organic light-emitting diode (AMOLED) display applications. The circuit uses current-writing mechanism and can automatically adjust the threshold-voltage shifts of both the organic light-emitting diodes (OLEDs) and the TFTs induced by the circuit aging or process variations. Experimental results indicate virtually no variation of the output driving current after long-term bias-temperature-stress (BTS).

Publication
IEICE TRANSACTIONS on Electronics Vol.E83-C No.5 pp.779-782
Publication Date
2000/05/25
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Electronic Displays

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