Patent ID: 8993994
Filing Date: 2015-03-31
Classification: H01L

Abstract:
1. A light emitting device comprising: a substrate; a first electrode on the substrate, the first electrode comprising a light-transmissive material having a refractive index greater than a refractive index of the substrate; a refraction conversion layer between the substrate and the first electrode, the refraction conversion layer comprising a first layer having a refractive index greater than the refractive index of the first electrode, a second layer having a refractive index smaller than the refractive index of the first layer, and a third layer having a refractive index smaller than the refractive index of the second layer, wherein the first layer, the second layer, and the third layer are sequentially formed in a direction from the first electrode toward the substrate; a second electrode facing the first electrode; and an organic emissive layer between the first electrode and the second electrode, wherein the refractive index of the first electrode is in a first range and a refractive index of a material included in the organic emissive layer is in a second range, and wherein the lower end of the first range is greater than or equal to the upper end of the second range.