Title :
Integration of organic LEDs and amorphous Si TFTs onto flexible and lightweight metal foil substrates
Author :
Wu, C.C. ; Theiuss, S.D. ; Gu, G. ; Lu, M.H. ; Sturm, J.C. ; Wagner, S. ; Forrest, S.R.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
Abstract :
We report the integration of organic light emitting devices (OLEDs) and amorphous Si (a-Si) thin-film transistors (TFTs) on both glass, and unbreakable and lightweight thin stainless steel foil substrates. The doped-polymer OLEDs were built following fabrication of driver TFTs in a stacked structure. Due to the opacity of the steel substrate, top-emitting OLED structures were developed. It is shown that the a-Si TFTs provide adequate current levels to drive the OLEDs at video brightness (/spl sim/100 cd/m/sup 2/). This work demonstrates that lightweight and rugged TFT backplanes with integrated OLEDs are essential elements for robust and highly portable active-matrix emissive flat-panel displays.
Keywords :
LED displays; amorphous semiconductors; driver circuits; elemental semiconductors; flat panel displays; foils; integrated optoelectronics; organic compounds; silicon; stainless steel; substrates; thin film transistors; Si; amorphous Si TFTs; doped-polymer OLEDs; driver TFTs; flexible lightweight metal foil substrates; glass substrates; integration; organic LEDs; portable active-matrix emissive flat-panel displays; rugged TFT backplanes; stacked structure; stainless steel foil substrates; steel substrate opacity; top-emitting OLED structures; video brightness; Amorphous materials; Brightness; Driver circuits; Fabrication; Glass; Light emitting diodes; Organic light emitting diodes; Steel; Substrates; Thin film transistors;
Journal_Title :
Electron Device Letters, IEEE
