Patent ID: 8421100

Claim:
A semiconductor light emitting device, comprising: a substrate; a GaN based structure above a top surface of the substrate and including at least one first GaN based semiconductor layer, the at least one first GaN based semiconductor layer being n-type conductive, an active layer below a bottom surface of the at least one first GaN based semiconductor layer, and at least one second GaN based semiconductor layer above the top surface of the substrate, wherein the at least one second GaN based semiconductor layer is p-type conductive and includes an AlGaN layer and a GaN layer, and wherein an area of a first surface of the AlGaN layer adjacent to the active layer is different from an area of at least one of a top surface and a bottom surface of the GaN layer; a plurality of patterns disposed from at least a lower sublayer of the at least one first GaN based semiconductor layer through the at least one second GaN based semiconductor layer; an insulating member comprising insulating material, the insulating member filling the plurality of patterns; and a first electrode on the at least one first GaN based semiconductor layer and in contact with the insulating member, wherein the at least one first GaN based semiconductor layer, the active layer and the at least one second GaN based semiconductor layer have a common slant side portion, wherein there is no insulating material disposed on the top surface of the GaN based structure, wherein a lowermost surface of the insulating member has an area greater than or equal to an uppermost surface of the insulating member, wherein the insulating member has a top surface above the at least one second GaN based semiconductor layer, and wherein the at least one second GaN based semiconductor layer is above the active layer.