Patent ID: 7279750

Claim:
A semiconductor device comprising: at least one semiconductor constructing body which comprises: (i) an SOI semiconductor substrate including a semiconductor substrate, an insulating layer formed on the semiconductor substrate, and an SOI integrated circuit portion which is provided on the insulating layer and which includes a number of thin-film transistors, and (ii) a plurality of external connection electrodes connected to the SOI integrated circuit portion; a metal foil which is electrically connected to the semiconductor substrate and to which a ground potential is applied; an insulating layer provided around the semiconductor constructing body and having a thickness substantially equal to a thickness of the semiconductor constructing body; at least one upper interconnecting layer which is provided on the semiconductor constructing body and the insulating layer, and which is electrically connected to at least one of the external connection electrodes of the semiconductor constructing body; and a vertical conducting portion which extends through at least the insulating layer and electrically connects the metal foil to the upper interconnecting layer.