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OLED Manufacturing on Flexible Substrates Towards Roll-to-Roll

: Wang, Dongxiang; Hauptmann, Jacqueline; May, Christian


MRS advances 4 (2019), Nr.24, S.1367-1375
ISSN: 2059-8521
Fraunhofer FEP ()
OLED; flexible lighting coating; organic; optoelectronic; ultra-thin glass

Large area lighting OLEDs manufactured in a Roll-to-Roll (R2R) fashion enable the well-longed production capability with considerably high throughput based on flexible substrates, hence largely reduced OLED manufacturing cost. This paper will outline the present status of R2R OLED fabrication on ultra-thin glass with the focus on transparent OLED devices and how to perform segmentation by printing of silver- and dielectric pastes. Ultra-thin glass (UTG) is laminated on a PET film to avoid fabrication interruptions when glass cracks occur during the Roll-to-Roll process. The R2R fabricated flexible OLEDs also show key-values comparable to conventional OLEDs fabricated on small rigid glass in lab-scale.