Patent ID: 7812360
Filing Date: 2010-10-12
Classification: H01L

Abstract:
1. A light emitting apparatus, comprising: an aluminum nitride co-fired substrate provided with an inner wiring layer which penetrates the aluminum nitride substrate from the front surface to the rear surface; at least one light emitting device mounted on a front surface of the co-fired substrate through a flip-tip method; a reflector having an inclined surface for reflecting a light emitted from the light emitting device to a front side direction, said reflector surface being a metal film and said reflector being bonded to a surface of said aluminum nitride co-fired substrate so as to surround a circumference of said light emitting device; a printed wiring board at a rear surface of said aluminum nitride co-fired substrate; and an electrode on an outer peripheral portion of the rear surface of said aluminum nitride co-fired substrate; wherein said printed wiring board comprises a through hole at immediately below said aluminum nitride co-fired substrate, and a heat sink having a raised portion fitted into said through hole is tightly bonded to the rear surface of said aluminum nitride co-fired substrate a current carrying operation to the light emitting device is performed through the inner wiring layer without using a wire bonding, the reflector having an inclined surface is a metal or a resin, said metal film on the inclined surface of the reflector is composed of aluminum or silver, and a wiring of the printed wiring board is connected to the electrode, so that current is supplied from said printed wiring board to the light emitting device through the internal wiring layer formed in said aluminum nitride co-fired substrate.