ORGANIC ELECTROLUMINESCENT DEVICE

摘要

An organic electroluminescent device comprising: a substrate; (2) a first electrode (4) disposed over the substrate for injecting charge of a first polarity; a second electrode (6) disposed over the first electrode for injecting charge of a second polarity opposite to said first polarity; an organic light emitting layer (8) disposed between the first and the second electrode, the second electrode being transparent to light emitted by the light emitting layer; and a transparent encapsulant (14) disposed over the second electrode, wherein the transparent encapsulant comprises a microlens array (18) formed by a top surface of the transparent encapsulant and a diffraction grating (16) formed by a bottom surface of the transparent encapsulant.