Patent ID: 7310040

Claim:
A semiconductor device, comprising: a semiconductor substrate; an insulating film embedded in said semiconductor substrate; an insulating interlayer provided on said semiconductor substrate; a spiral inductor provided on said insulating interlayer; and a first shielding layer provided between said spiral inductor and said semiconductor substrate as being insulated from a surface of said semiconductor substrate, said first shielding layer elongating toward a direction along the surface of the substrate to provide a shield between said spiral inductor and said semiconductor substrate, wherein a dummy pattern composed of an embedded region of said insulating film and a remaining region of said semiconductor substrate from the upper viewpoint is provided in a predetermined region in the surface of said semiconductor substrate, in the region for forming said spiral inductor, said dummy pattern is selectively provided only in the region that is right under said first shielding layer, and said dummy pattern in the region for forming said spiral inductor includes a geometric relationship, in which one of said embedded region and said remaining region is partially included in the other thereof in a form of a plurality of islands.