Patent ID: 8304795

Claim:
A semiconductor light emitting device comprising: a substrate; a semiconductor lamination portion made of nitride semiconductor that is provided on one surface of the substrate, and formed by laminating an n-type layer and a p-type layer so as to form a light-emitting layer; a light transmitting conductive layer with a plurality of concaves on a surface provided at a surface side of the semiconductor lamination portion, wherein the light transmitting conductive layer and the concaves are formed so that a thickness of the light transmitting conductive layer which is left under the concaves is 0.05 μm or more and a depth of each of the concaves is 2 μm to 10 μm, thereby a concave-convex pattern is formed on the surface of the light transmitting conductive layer; a first electrode provided on the light transmitting conductive layer so as to be electrically connected to a conductivity type layer of the surface side of the semiconductor lamination portion; and a second electrode provided so as to be electrically connected to a conductivity type layer of a lower layer side of the semiconductor lamination portion, wherein the plurality of concaves are formed so as to leave a part of the light transmitting conductive layer on a bottom surface of each of the concaves, thereby a concave-convex pattern is formed on the surface of the light transmitting conductive layer, an insulating layer having a smaller refractive index than that of the light transmitting conductive layer provided on convexes of the concave-convex pattern so as to match to a pattern of the convexes, thereby forming a large step difference in the concave-convex pattern, and a passivation film provided on an entire surface of the concave-convex pattern so as not to fill up the concaves with the passivation film, wherein a plan view of each of the concaves is circular, a diameter of each of the concaves is 3 μm to 10 μm, and a minimum interval between each of the concaves is 3 μm to 10 μm.