Patent ID: 9184414
Filing Date: 2015-11-10
Classification: C09B,C09K,H01L,H05B

Abstract:
1. An organic electroluminescence device, comprising: a transparent electrode; an opposing electrode; an organic emitting layer provided between the transparent electrode and the opposing electrode; and a light-transmissive substrate, wherein a light-extraction layer is provided adjacent to a first side of the transparent electrode opposite to a second side of the transparent electrode facing the organic emitting layer, the light-extraction layer comprises a high refractive index layer and a low refractive index layer sequentially layered on the transparent electrode, the light-transmissive substrate is provided adjacent to the low refractive index layer, the light-extraction layer is placed above the opposing electrode, the high refractive index layer comprises a plurality of recess-protrusion units each provided by a protrusion and a recess at an interface between the high refractive index layer and the low refractive index layer, in at least one of the plurality of recess-protrusion units, a distance d a height d