Patent ID: 9647239
Date: 2017-05-09
CPC Classifications: H01L

Claim:
1. An electroluminescent device comprising: a substrate; a substrate electrode adjacent to the substrate; a counter electrode; an electroluminescent layer stack, the electroluminescent layer stack comprising at least one organic electroluminescent layer, wherein the electroluminescent layer stack is disposed between the substrate electrode and the counter electrode; and at least one optically transparent outcoupling body disposed on top of the substrate electrode, wherein the optically transparent body is arranged to increase the outcoupling of light generated by the at least one organic electroluminescent layer, wherein the organic electroluminescent layer at least partly covers and surrounds the optically transparent outcoupling body; wherein a surface of the counter electrode that faces the substrate is covered with a reflecting material, wherein the reflecting material is arranged to reflect light towards the substrate.