Amorphous Silicon Display Backplanes on Plastic Substrates

TitleAmorphous Silicon Display Backplanes on Plastic Substrates
Publication TypeJournal Article
Year of Publication2006
AuthorsStriakhilev, D., A. Nathan, Y. Vygranenko, P. Servati, C. - H. Lee, and A. Sazonov
JournalDisplay Technology, Journal of
Volume2
Pagination364 -371
Date Publisheddec.
ISSN1551-319X
Keywordsactive-matrix organic light-emitting diode displays, amorphous silicon display backplanes, current drive capability, driver circuits, field-effect mobility, flat panel displays, LED displays, long-term stability, organic light emitting diodes, pixel driver circuits, plastic substrates, Si, silicon, thin film transistors, thin-film transistor backplanes
Abstract

Amorphous silicon (a-Si) thin-film transistor (TFT) backplanes are very promising for active-matrix organic light-emitting diode displays (AMOLEDs) on plastic. The technology benefits from a large manufacturing base, simple fabrication process, and low production cost. The concern lies in the instability of the TFTs threshold voltage (VT) and its low device mobility. Although VT-instability can be compensated by means of advanced multi-transistor pixel circuits, the lifetime of the display is still dependent on the TFT process quality and bias conditions. A-Si TFTs with field-effect mobility of 1.1 cm2/Vmiddots and pixel driver circuits have been fabricated on plastic substrates at 150 degC. The circuits are characterized in terms of current drive capability and long-term stability of operation. The results demonstrate sufficient and stable current delivery and the ability of the backplane on plastic to meet AMOLED requirements

URLhttp://dx.doi.org/10.1109/JDT.2006.885153
DOI10.1109/JDT.2006.885153

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