Patent ID: 8692312

Claim:
A semiconductor memory device comprising: a substrate; a laminated body including a first silicon layer, a first insulating film, a second silicon layer, and a second insulating film which are laminated on the substrate in turn, and including a first region being a central part in which a memory cell is disposed and a second region being an end part in which a contact is disposed; a semiconductor layer, in the first region, disposed in a hole penetrating the laminated body in a first direction perpendicular to a surface of the substrate; a first memory film disposed between the first silicon layer and the semiconductor layer; a second memory film disposed between the second silicon layer and the semiconductor layer; a first contact, in the second region, connected to the first silicon layer and extending in the first direction; and a second contact, in the second region, connected to the second silicon layer and extending in the first direction, wherein in the second region, an end face of the first silicon layer is formed to protrude from an end face of the second silicon layer in a second direction parallel to the surface of the substrate, an end face of the first insulating film is formed to protrude from the end face of the first silicon layer in the second direction, and an end face of the second insulating film is formed to protrude from the end face of the second silicon layer and not to protrude from the end face of the first silicon layer in the second direction.