Patent ID: 8071998

Claim:
A light emitting assembly comprising: a circuit board including a dielectric substrate that is formed with at least one elongate through-hole, and provided with a conductive contact unit that is formed on said dielectric substrate; a heat sink attached to said dielectric substrate and having a plate-like base wall of a first metallic material and at least one mesa of a second metallic material protruding from said base wall into and through said through-hole in said dielectric substrate; and at least one light emitting package unit including a plurality of light emitting packages bonded to said mesa and coupled to said conductive contact unit, each of said light emitting packages including a light emitting die and a heat dissipating member that is bonded to said mesa and that is connected to said light emitting die in a manner to conduct heat from said light emitting die to said mesa of said heat sink, wherein said dielectric substrate has a trace-forming surface, said mesa having an end face that is substantially flush with said trace-forming surface of said dielectric substrate.