Patent ID: 7746644

Claim:
A package assembly, comprising: a thermal conductive lower metal layer made of copper; an electric insulating ceramic layer disposed on and bonded to the thermal conductive lower metal layer; a patterned upper metal layer made of copper and disposed on and bonded to the electric insulating ceramic layer, wherein the patterned upper metal layer is a single-layered metal layer and has an opening from which the electric insulating ceramic layer is exposed; and an electronic component, which is disposed in the opening of the patterned upper metal layer, mounted on the electric insulating ceramic layer directly through a thermally conductive adhesive, and electrically connected to the patterned upper metal layer, wherein: the thermally conductive adhesive and the patterned upper metal layer are disposed on a top surface of the electric insulating ceramic layer; a first interface between the lower metal layer and the ceramic layer is the same as a second interface between the ceramic layer and the upper metal layer but different from a third interface between the thermally conductive adhesive and the ceramic layer; and a sidewall of the opening has an inclined surface or a curved surface for reflecting light rays emitted from the electronic component, and the inclined surface or the curved surface is made of the copper of the upper metal layer bonded to the ceramic layer.