An OLED display having at least first, second, and third differently colored pixels includes a first light emitting layer provided over a substrate for the first and second pixels and a second light emitting layer provided over the substrate for the third pixel wherein the first and second light emitting...http://www.google.de/patents/US20060238119?utm_source=gb-gplus-sharePatent US20060238119 - Multicolor OLED displays
