Patent ID: 7781334

Claim:
A method of manufacturing a semiconductor device, comprising: forming a hole in a substrate, the hole extending from an upper surface of the substrate to a first level within the substrate; forming an insulating film as a continuous film with an interior part covering an interior side surface and a bottom surface of the hole and an exterior part covering the upper surface of the substrate; forming a metal lining layer as a continuous layer with an interior part covering an interior side surface and a bottom surface of the interior part of the insulating film and an exterior part covering the exterior part of the insulating film; forming an electrode material layer as a continuous layer with an interior part filling the hole up to a second level even with an uppermost surface of the exterior part of the insulating film and an exterior part covering the interior part of the electrode material layer and the exterior part of the metal lining layer; removing the exterior part of the electrode material layer from the exterior part of the metal lining layer by wet etching, so that the upper surface of the electrode material layer within the hole is disposed at a level lower than an upper surface of the metal lining layer, thereby forming an electrode including the interior part of the electrode material layer left within the hole; and removing the exterior part of the metal lining layer by wet etching.