Patent ID: 8105854

Claim:
A method of fabricating a Chip on Board (COB) package comprising: providing a board-like substrate with metal layers formed on upper and lower surfaces thereof; forming a through hole in the substrate penetrating the metal layers formed on both upper and lower surfaces of the substrate and the substrate; attaching a tape on an undersurface of the metal layer formed on the lower surface of the substrate; mounting a light source on the tape in a position corresponding to the location of the through holes, the light source including an LED device; forming a dome structure with resin to fix the light source to the substrate; and removing the tape to expose an undersurface of the light source to the lower surface of the substrate via the through hole, wherein the undersurface of the light source exposed via the through hole is coplanar with the undersurface of the metal layer formed on the lower surface of the substrate, thereby the light source and the metal layer make surface contact with a chassis when the package is mounted thereon.