Patent ID: 7126209

Claim:
A method for producing a resin-encapsulated semiconductor device, comprising: using a lead frame that includes a frame and a plurality of inner leads that extend inward from the frame, each of the inner leads having a protruded portion provided on a surface of an external side portion thereof, the protruded portion being protruded in a thickness direction, together with a semiconductor chip having a size such that its periphery falls within an area inward relative to the protruded portions of the inner leads, the semiconductor chip having a group of electrodes; forming conductive bumps on the electrodes of the semiconductor chip; electrically connecting the electrodes of the semiconductor chip with internal portions of the respective inner leads via the conductive bumps, the internal portions being positioned inward relative to the protruded portions; applying a molding sheet so as to be in close contact with surfaces of the protruded portions; encapsulating a region including surfaces of the semiconductor chip and the conductive bumps with an encapsulating resin, with the frame and the protruded portions of the inner leads being exposed; removing the frame from the encapsulated structure; and providing external electrodes on surfaces of the protruded portions so that tip ends of the external electrodes are protruded relative to a back face of the semiconductor chip.