Title :
Amorphous Silicon Display Backplanes on Plastic Substrates
Author :
Striakhilev, Denis ; Nathan, Arokia ; Vygranenko, Yuri ; Servati, Peyman ; Lee, Czang-Ho ; Sazonov, Andrei
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont.
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
Keywords :
LED displays; driver circuits; organic light emitting diodes; silicon; thin film transistors; Si; active-matrix organic light-emitting diode displays; amorphous silicon display backplanes; current drive capability; field-effect mobility; flat panel displays; long-term stability; pixel driver circuits; plastic substrates; thin-film transistor backplanes; Active matrix organic light emitting diodes; Active matrix technology; Amorphous silicon; Backplanes; Circuits; Flat panel displays; Organic light emitting diodes; Plastics; Substrates; Thin film transistors; Flat panel displays; organic-light emitting diode displays (OLEDs); thin-film transistors (TFTs);
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2006.885153
