Patent ID: 8900984
Filing Date: 2014-12-02
Classification: H01L

Abstract:
1. A method for manufacturing a nonvolatile semiconductor memory device, the device including a substrate; a stacked structural body provided on a major surface of the substrate, the stacked structural body including a plurality of electrode films stacked alternately with a plurality of insulating films in a first direction perpendicular to the major surface; a semiconductor pillar piercing the stacked structural body in the first direction; and a memory unit provided at an intersection between the semiconductor pillar and each of the electrode films, the method comprising: forming the stacked structural body on the major surface of the substrate, the stacked structural body including the plurality of electrode films stacked alternately with the plurality of inter-electrode insulating films; making a through-hole to pierce the stacked structural body in the first direction; forming the semiconductor pillar by filling a semiconductor into the through-hole; and forming the memory unit at the intersection between the semiconductor pillar and each of the electrode films, the forming of the stacked structural body including: wherein: