Patent ID: 9368681
Filing Date: 2016-06-14
CPC Classification: H01L,Y10T

Claim Text:
1. A semiconductor light emitting device comprising: an n-type semiconductor layer, a light emitting layer and a p-type semiconductor layer which are GaN-based semiconductors and formed on a primary surface of a C plane (0001) sapphire substrate, the sapphire substrate comprising a plurality of protrusions formed on the primary surface of the sapphire substrate in a two-dimensionally repeated pattern, and the protrusions having a shape of a polygon in plan view of the light emitting device, said polygon having two adjacent component sides that are perpendicular to A-axis of said GaN-based semiconductors, wherein in the plan view, an external shape of the semiconductor light emitting device is a polygon having two adjacent component sides that make the same angle as the two adjacent component sides of the protrusions.