Patent ID: 7948088

Claim:
A semiconductor device comprising a first semiconductor substrate, the first semiconductor substrate comprising: a plurality of first integrated circuit elements formed on a main surface of the first semiconductor substrate; a plurality of first through holes formed so as to penetrate from the main surface to a rear surface of the first semiconductor substrate; and a first conductive film formed inside each of the plurality of first through holes and electrically connected to at least one of the plurality of integrated circuit elements, wherein an opening shape of each of the plurality of first through holes in the main surface is rectangular, wherein the plurality of first through holes includes a first group of through holes having long-sides oriented along a first direction of the main surface and a second group of through holes having long-sides oriented along a second direction different from the first direction of the main surface, the first group and the second group not intersecting one another, and wherein the number of the first through holes in the first group and the number of the first through holes in the second group in the main surface are equal to each other.