Patent ID: 8823145

Claim:
A light-emitting module comprising: a board comprising: metal layers including a first metal layer formed on an upper surface of the board, a second metal layer formed on a bottom surface of the board, and a third metal layer interposed between the first metal layer and the second metal layer; a resin layer between the first or second layer and the third metal layer; a first via connected between the first metal layer and the third metal layer; and a second via connected between the second metal layer and the third metal layer; a light-emitting diode chip disposed on the first metal layer; a wire electrically connected between the first metal layer and the light-emitting diode chip; and a heat sink via mechanically connected between the second metal layer and the third metal layer, wherein the first via is laterally offset from the second via, wherein at least one of the metal layers functions as a heat sink, and wherein the heat sink via comprises an electrically insulating material.