Patent ID: 8546178

Claim:
A semiconductor light emitting device comprising: a substrate including a first region provided along a periphery of a first major surface and a second region provided on a center portion of the first major surface; a first semiconductor layer provided on the first major surface of the substrate; a light emitting layer provided on the first semiconductor layer; a second semiconductor layer provided on the light emitting layer; and a translucent electrode provided on the second semiconductor layer, a reflectance in the second region being higher than a reflectance in the first region, wherein a plurality of protrusions are provided at the first major surface, at least one selected from the group consisting of average pitch dimension, height dimension, and side surface angle of the protrusions is different between the first region and the second region so that the reflectance in the second region is made higher than the reflectance in the first region, the average pitch dimension of the protrusions in the first region exceeds 2 μm and is 6 μm or less, and the average pitch dimension of the protrusions in the second region is 2 μm or less.