Patent ID: 8518744

Claim:
A method of manufacturing a semiconductor device comprising the steps of: (a) providing a substrate including a front surface, a plurality of first electrodes formed on said front surface, a plurality of wirings formed on said front surface and electrically connected with said first electrodes, respectively, a solder resist formed over said front surface such that said first electrodes are exposed from said solder resist, and a rear surface opposite to said front surface, and said wirings being covered with said solder resist; (b) mounting a first semiconductor chip, including a first main surface, a plurality of first bonding pads formed on said first main surface and a first back surface opposite to said first main surface, over said solder resist via a first insulating film such that said first back surface of said first semiconductor chip faces said front surface of said substrate; and (c) electrically connecting said first bonding pads with said first electrodes via a plurality of first bonding wires, wherein in said step (a), said solder resist is formed by applying a resist over said front surface of said substrate twice.