The research team at GE has put together a cool OLED christmas tree. The OLEDs were made by a roll-to-roll fabrication. The OLED is 6 inch wide, by 15 feet. Here's a nice video of the tree:
Anit Duggal, who's leading GE OLED program said - We’re making great progress toward hitting the metrics needed to successfully introduce OLED lighting to market. We continue to make steady advances in efficiency, lifetime, and lighting-quality using device structures that can be made with roll-to-roll manufacturing, so that we’ll be able to introduce OLED lighting at an affordable price.
We also got a nice high resolution picture of the tree: