Patent ID: 8729585

Claim:
A semiconductor light emitting device comprising: a substrate including a first surface, a second surface opposite to the first surface, a plurality of lateral surfaces intersected with the first surface and the second surface, a plurality of first regions each provided on the lateral surfaces, and having a first width and a first roughness, and a plurality of second regions each provided on the lateral surfaces, and having a second width smaller than the first width and a second roughness smaller than the first roughness, the first regions and the second regions being alternately arranged, a proportion of the sum of the first widths to a distance between the first surface and the second surface being 0.5 or more; and a semiconductor laminated body provided above the first surface of the substrate, and including a first semiconductor layer of a first conductivity type, an active layer, and a second semiconductor layer of a second conductivity type which are stacked one upon another in this order.