Patent ID: 7157363

Claim:
A method for producing a semiconductor package, comprising the steps of: forming, on a wafer provided with an electrode, a passivation film provided with an opening portion in a region conformable to said electrode; forming, on said passivation film, an insulating layer provided with an opening portion in a region conformable to said electrode, the insulating layer having a thickness of 5 to 50 μm; forming a resin projection portion on said insulating layer; forming a rerouting layer connected to said electrode through said opening portion; forming a conductive layer connected to said rerouting layer and coating said resin projection portion; forming a sealing resin layer which seals said wafer, said insulating layer and said rerouting layer and has an opening portion above said conductive layer; and forming a solder bump on said conductive layer in said opening portion of said sealing resin layer.