Patent ID: 8541820
Filing Date: 2013-09-24
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first insulating film formed on a first major surface of a semiconductor substrate; an electrode pad formed in the first insulating film on the first major surface, the electrode pad including a conductive film, and at least a part of the electrode pad including a free region in which the conductive film is not present when viewed from a direction perpendicular to the first major surface of the semiconductor substrate; an external connection terminal formed on a second major surface facing the first major surface of the semiconductor substrate; a through-electrode formed in a through-hole formed from the second major surface side of the semiconductor substrate and reaching the electrode pad, the through-electrode electrically connecting the electrode pad and the external connection terminal to each other, and a dummy film formed in the first insulating film between the semiconductor substrate and the electrode pad, the dummy film being arranged at a position corresponding to the electrode pad in a direction perpendicular to the first major surface of the semiconductor substrate, wherein the first insulating film is present in the free region included in the electrode pad, and the first insulating film in the free region in contact with the through-electrode has a thickness less than a thickness of the electrode pad.