Disclosed is an organic electroluminescent device comprising a first electrode, a second electrode, at least one organic layer containing a luminescent layer and disposed between the first electrode and the second electrode, a transparent substrate and a prism structure disposed between the first electrode...http://www.google.fr/patents/US7800301?utm_source=gb-gplus-shareBrevet US7800301 - Organic electroluminescent device comprising a prism structure
Organic electroluminescent device comprising a prism structure
