Light extraction is the process of removing light from the device itself. So when the device emits a photon, it gets trapped in the glass, in the organic layers themselves in the metals. And the-- what our challenge is, is to get all of that light into the viewing angle. So that when somebody sees the OLED they're seeing the full efficiency of that device. Rather than having light lost in the various segments.

Researchers at the University of Michigan have discovered a way to get 50% more light out of organic light emitting diodes (OLEDs), bringing them one step closer to more widespread adoption as a general lighting source, while increasing their value in displays.