Semiconductor device and method of producing the same

摘要

A semiconductor device includes a semiconductor substrate having a first surface and a second surface opposite to the first surface; a first through wiring penetrating through the semiconductor substrate from the first surface to the second surface; an antenna formed on the first surface and electrically connected to the first through wiring; a semiconductor element formed on the second surface and electrically connected to the first through wiring; a first sealing layer formed on the second surface to cover the semiconductor element; and a first external terminal having one end portion exposed from the first sealing layer and the other end portion electrically connected to the semiconductor element.