Patent ID: 9109759
Filing Date: 2015-08-18
Classification: G02B,H01L

Abstract:
1. A light-emitting device comprising: an organic electroluminescent element that has a light-emitting surface and emits light from the light-emitting surface; and a structure layer disposed directly or indirectly on the light-emitting surface of the organic electroluminescent element; wherein the structure layer comprises, on a surface thereof that is opposite to the organic electroluminescent element, a concavo-convex structure comprising a first streak array extending continuously in a first direction that is parallel to the surface, a second streak array extending continuously in a second direction that is parallel to the surface and intersects with the first direction, and a third streak array extending continuously in a third direction that is parallel to the surface and intersects with the first direction and the second direction, wherein the concavo-convex structure has three or more heights that are different from each other by 0.1 μm or larger.