Patent ID: 8378406

Claim:
A nonvolatile semiconductor memory device comprising: a substrate; a memory multilayer body with a plurality of insulating films and electrode films alternately stacked therein, the memory multilayer body being provided on a memory array region of the substrate; a semiconductor pillar buried in the memory multilayer body and extending in stacking direction of the insulating films and the electrode films; a charge storage film provided between one of the electrode films and the semiconductor pillar; a dummy multilayer body with a plurality of the insulating films and the electrode films alternately stacked therein and a dummy hole formed therein, the dummy multilayer body being provided on a peripheral circuit region of the substrate; an insulating member buried in the dummy hole; and a plurality of contacts buried in the insulating member and extending in the stacking direction so that each of the plurality of contacts buried in the insulating member are buried in the dummy hole, wherein an equal potential is applied to the plurality of the contacts.