Semiconductor light emitting device and method for manufacturing the same

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.