Conference Program - LOPE-C 2011

SCIENTIFIC CONF. | THURSDAY-JUNE 30, 2011
Track 5
OLEDs and OPV (11:30 am - 01:20 pm) | LOCATION HARMONIE E / LEVEL C2
12:00 pm The 33x33cm² panel of OLED100.eu project
Dr Ulrich Todt,
Fraunhofer Institute for Photonic Microsystems, Germany
Beside conventional inorganic LEDs, OLEDs are considered as the second solid-statelighting
technology for new flat, large-area, and efficient lighting solutions. Within the
integrated European research project OLED100.eu all major challenges for
commercialisation of large area OLED lighting are addressed. Within this project
Fraunhofer IPMS performs R&D on up-scaling topics aiming at tiling of large-area
lighting consisting of seamless panels of 33x33 cm².
Starting from the design rules given by the screen printing processes for substrate
patterning developed at COMEDD we will present the design, optimisation and
realisation of 33x33cm² OLED-panels with respect to OLED-stack and homogeneity
requirements. The panels are based on the on-substrate tiling concept with 5 segments
connected in series. Furthermore it uses busbar structures, a metallization layer that
helps spreading the current evenly over the substrate to ensure homogenous light
emission. The total active area is 828 cm2 on a 33×33 cm2 substrate yielding an aperture
ratio of 76%. This is a major step towards square-meter-wide lighting walls or ceilings,
one of the main goals of OLED100.eu.
The discussion of electro-optical key parameters and fabrication yield of the panels
including the demonstration of such 33x33cm² panels will be the main topic of the talk.
This work is funded by the European Community's Seventh Framework Programme
under grant agreement no. FP7-224122 (OLED100.eu).
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