Patent ID: 8426887

Claim:
A light emitting device comprising: a first conductive type semiconductor layer including a plurality of grooves; an active layer formed over an upper surface of the first conductive type semiconductor layer and along the grooves; at least one anti-current leakage layer having a substantially flat upper surface over the active layer; and a second conductive type semiconductor layer over the anti-current leakage layer, wherein the at least one anti-current leakage layer includes a first anti-current leakage layer and a second anti-current leakage layer over the first anti-current leakage layer, wherein the first anti-current leakage layer includes In x Al y Ga 1-x-y N (0<x≦0.03, 0<y<1, 0<x+y<1), and wherein the second anti-current leakage layer has a superlattice structure in which a stack structure of an AlGaN layer and a GaN layer is repeatedly stacked.