Patent ID: 7202509

Claim:
A light emitting apparatus comprising: a GaN substrate which is a nitride semiconductor substrate; a n-type nitride semiconductor layer at a first main surface side of said nitride semiconductor substrate; a p-type nitride semiconductor layer, at said first main surface side, placed more distantly from said nitride semiconductor substrate than said n-type nitride semiconductor layer; and a light emitting layer, at said first main surface side, placed between said n-type nitride semiconductor layer and said p-type nitride semiconductor layer, wherein said nitride semiconductor substrate has been n-typed by oxygen doping, the oxygen concentration is within the range of oxygen atoms 1E17/cm 3 to 2E19/cm 3 , the thickness of said GaN substrate is from 100 μm to 600 μm, and said substrate has a resistivity of 0.5 Ω•cm or less, and said p-type nitride semiconductor layer side is down-mounted so that light is emitted from a second main surface of said nitride semiconductor substrate at the opposite side from said first main surface.