Patent ID: 8748866

Claim:
A nitride semiconductor light emitting device comprising: first-type and second-type nitride semiconductor layers; an active layer disposed between the first-type and second-type nitride semiconductor layers, the active layer including a plurality of quantum barrier layers and a plurality of quantum well layers which are alternately laminated; and a current spreading layer disposed between the second type nitride semiconductor layer and the active layer, the current spreading layer including a plurality of first nitride thin films and a plurality of second nitride thin films which are alternately laminated, wherein: the first nitride thin films have band gaps larger than those of the second nitride thin films, and a first plurality of first nitride thin films positioned at outer first and second sides of the current spreading layer, the first plurality of first nitride thin films having a thickness greater than that of a second plurality of first nitride thin films positioned between the first plurality of first nitride thin films.