Patent ID: 9337383
Filing Date: 2016-05-10
CPC Classification: F21K,F21V,F21Y,H01L

Claim Text:
1. A light emitting device comprising: a first conductive type semiconductor layer; a second conductive type semiconductor layer disposed on the first conductive type semiconductor layer; and an active layer disposed between the first conductive type semiconductor layer and the second conductive type semiconductor layer, the active layer comprising quantum well layers and quantum barrier layers, wherein each of the quantum barrier layers includes first barrier layers and a second barrier layer disposed between the first barrier layers, an energy bandgap of the second barrier layer is larger than energy bandgaps of the quantum well layers and the energy bandgap of the second barrier layer is smaller than energy bandgaps of the first barrier layers, wherein a thickness of each of the first barrier layers is smaller than a thickness of the second barrier layer, and wherein the thickness of the second barrier layer is 5 nm or less, and the thickness of each of the first barrier layers is 1 nm or less, and wherein the energy bandgaps of the first barrier layers are larger than an energy bandgap of the first conductive type semiconductor layer, and the energy bandgaps of the first barrier layers are larger than an energy bandgap of the second conductive type semiconductor layer.