Patent ID: 7271347

Claim:
A wired circuit board that receives a semiconductor device thereon, comprising: a metal supporting layer; an insulating base layer formed on the metal supporting layer; an opening portion formed in the insulating base layer to expose the metal supporting layer; a channel formed in the insulating base layer proximate to the opening portion and along perimeter of the opening portion, wherein the channel is laterally displaced from an interface of the insulating base layer and the opening portion; a heat radiating portion that is formed in the opening portion, the heat radiating portion having a first surface that is coupled to the metal supporting layer and a second surface that is coupled to the semiconductor device; a conductive pattern formed on the insulating base layer and extending into the channel, the conductive pattern including a terminal portion for connection with the semiconductor device, wherein the terminal portion extends into the channel; and a mounting portion for mounting the semiconductor device thereon, wherein the opening portion and the terminal portion are located in the mounting portion.