Patent ID: 7038245

Claim:
A semiconductor light emitting element comprising: a light emitting layer for emitting light; and a substrate transparent to the light emitted from the light emitting layer, and having: a top surface on which the light emitting layer is formed; a bottom surface opposed to the top surface; and side surfaces connecting the top surface and the bottom surface, wherein each of the side surfaces is composed of a first side surface extending from the top surface toward the bottom surface, a second side surface extending from the first side surface toward the bottom surface, and a third side surface extending from the second side surface toward the bottom surface, wherein the third side surface inclines to diverge toward the top surface, and the second side surface inclines to diverge more toward the top surface to extract part of the light from the light emitting layer externally, wherein: the substrate is made of GaP, the substrate is an off-axis ( 100 ) GaP substrate and the off-axis angle of the substrate is equal to or larger than 5° and equal to or smaller than 30°, the first side surfaces are cleavable planes, and the second side surfaces have a plurality of depressions and protrusions having a height equal to or higher than 1 μm and equal to or lower than 2 μm.