Patent ID: 8823029
Filing Date: 2014-09-02
Classification: H01L

Abstract:
1. A light emitting device, comprising: an active layer; a first conductive semiconductor layer on a first surface of the active layer; a first electrode layer on the first conductive semiconductor layer; a second conductive semiconductor layer on a second surface of the active layer; a first light extraction pattern comprising holes and first protrusions on the first conductive semiconductor layer; and a second light extraction pattern comprising second protrusions on the first light extraction pattern, wherein the first electrode layer and the second protrusions of the second light extraction pattern are in one hole of the holes, and the second protrusions are disposed between the first electrode layer and the first protrusions of the first light extraction pattern, wherein a first flat surface of the first conductive semiconductor layer in the one hole in which the first electrode layer is disposed is lower than second flat surfaces of the first conductive semiconductor layer in other holes of the holes, and wherein the second protrusions are disposed on the first and the second flat surfaces.