Patent ID: 7719116

Claim:
A semiconductor device comprising: a semiconductor substrate having an integrated circuit which includes a plurality of internal connection pads; a first insulating film formed on the semiconductor substrate and having a plurality of first openings each of which corresponds to one of the internal connection pads, respectively; at least one power source internal wiring line formed on the first insulating film and connected to the internal connection pads via the first openings; a second insulating film formed on the first insulating film and on the internal wiring line and having a plurality of second openings exposing parts of the internal wiring line, the number of the second openings in the second insulating film being larger than the number of the first openings in the first insulating film; and a plurality of wiring lines which are formed on an upper side of the second insulating film to correspond to the internal wiring line and which are electrically connected to the internal wiring line via the plurality of second openings of the second insulating film, each of the wiring lines having a thickness in a vertical direction that is thicker than a thickness in the vertical direction of the internal wiring line and a length in a first horizontal direction that is shorter than a length in the first horizontal direction of the internal wiring line; wherein each of the wiring lines has at least one external electrode pad portion whose number is smaller than a number of second openings in the second insulating film; and wherein a solder ball is provided on the at least one external electrode pad portion of each of the wiring lines.