Light-emitting device based on an electroluminescent organic material, having a shaped outer interface

摘要

A light emitting device based on an organic material comprises at least one emitting source including at least one layer of electroluminescent organic material (1, 2) located over a layer of transparent metal material, which is used as an electrode and a substrate transparent plate, for example made of glass or plastic material. The substrate plate (5) has one or both its surfaces (5a) shaped with a plurality of microprojections (6) arranged in a matrix each having a height/width ratio (H/L) not lower than 1.