Patent ID: 9508956
Filing Date: 2016-11-29
CPC Classification: H01L

Claim Text:
1. A top emission-type organic light emitting diode, in which at least a reflective layer made of a metal material, an anode conductive layer made of a transparent conductive material, an organic electro-luminescence layer including a light emitting layer containing an organic light emitting material, and a cathode conductive layer in which a semi-transmissive metal layer made of a metal material and a transparent conductive layer made of a transparent conductive material are sequentially stacked on a substrate, and a two-dimensional lattice structure, in which a plurality of convex portions are arrayed periodically and two-dimensionally, is formed on a surface of said semi-transmissive metal layer which is in contact with said transparent conductive layer side, wherein assuming that a real part of a propagation constant of surface plasmon on said surface, which is expressed by a complex number, is k, a center-to-center distance P between adjacent convex portions in the convex portions formed on said surface has a value in the range of Mathematical Formula (1), P