Patent ID: 8552445

Claim:
A semiconductor light emitting device, comprising: a semiconductor stack including a light emitting layer between an n-type semiconductor layer and a p-type semiconductor layer; a substrate on which the semiconductor stack is mounted; an electrode disposed on a light extraction surface opposite to a surface that the semiconductor stack is mounted on the substrate; and a plurality of convexes on the light extraction surface, wherein numerous of the plurality of the convexes are disposed in a first convex area and numerous of the plurality of the convexes are disposed in a second convex area, wherein an average height of convexes in the first region is greater than an average height of convexes in the second region; wherein the second convex area is located between the first convex area and the electrode and is adjacent to an interface between the electrode and the semiconductor stack; wherein a base end of a first convex disposed in the first convex area is located to be closer to the light emitting layer than the interface; and wherein a base end of a second convex disposed in the second convex area is located to be closer to the interface than the base end of the first convex.