Patent ID: 8610145
Filing Date: 2013-12-17
Classification: H01L

Abstract:
1. A white-light emitting apparatus comprising: a co-fired aluminum nitride substrate; and a light emitting device arranged on a front surface of the co-fired aluminum nitride substrate, wherein the front surface of the co-fired aluminum nitride substrate, on which the light emitting device is arranged, is mirror-polished so as to have a surface roughness of 0.3 μm Ra or less, wherein the light emitting apparatus comprises a vapor-deposited metal film and via holes, the vapor-deposited metal film being arranged directly on the front surface of the co-fired aluminum nitride substrate around the light emitting device and having a reflectivity of 90% or more with respect to light emitted from the light emitting device, and the via holes penetrating the co-fired aluminum nitride substrate from the front surface, on which the light emitting device is arranged, to the rear surface of the co-fired aluminum nitride substrate to thereby allow an electrical conduction to the light emitting device from the rear surface to the front surface without using a wire-bonding, wherein the vapor-deposited metal film comprises aluminum or silver and has a thickness of 1 to 5 μm, and wherein the co-fired aluminum nitride substrate has a thickness of 0.3 to 0.6 mm.