Patent ID: 7915714

Claim:
A semiconductor light emitting element formed by laminating a compound semiconductor layer on a single crystal substrate, and dividing the single crystal substrate into pieces, wherein the single crystal substrate has a hexagonal crystalline structure in which a (0001) plane is a lamination plane on which the compound semiconductor layer is laminated, and a (1-100) plane, a (0-110) plane, a (-1010) plane, a (-1100) plane, a (01-10) plane, and a (10-10) plane are cleavage planes, all side faces of each of substrate pieces as the divided single crystal substrate are formed of planes different from the cleavage planes of the single crystal substrate, and the lamination plane of the substrate piece is formed in a generally rectangular shape, and one side face of the substrate piece forms an angle of not less than 5° and not more than 25° with respect to any of the cleavage planes.