Patent ID: 8324724

Claim:
An LED assembly, comprising: a heat sink having an upper surface; a surface treatment dielectric layer formed on the upper surface of the heat sink, the surface treatment dielectric layer defining at least one first through hole to expose a portion of the upper surface of the heat sink; an electrically conductive layer formed on the surface treatment dielectric layer, the electrically conductive layer having a plurality of electrical traces and defining at least one second through hole corresponding to the first through hole, the second through hole and the first through hole being at least partially overlapped so that a portion of the upper surface of the heat sink is exposed from an overlapped region of the first through hole and the second through hole; a thermally conductive layer formed in the first through hole and the second through hole and directly contacted with the upper surface of the heat sink; and an LED chip, having a plurality of electrodes electrically connected to the electrical traces of the electrically conductive layer, being contacted with the thermally conductive layer so that heat generated form the LED chip transfers to the portion of the upper surface of the heat sink exposed from the overlapped region of the first through hole and the second through hole through the thermally conductive layer.