Patent ID: 9076820
Filing Date: 2015-07-07
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate; a first stacked body having a plurality of electrode layers and a plurality of insulating layers alternately stacked on the substrate; a second stacked body including a select gate provided on the first stacked body; a plurality of insulating isolation sections provided so as to extend in a first direction, and isolate the first stacked body and the second stacked body in a second direction perpendicular to the first direction, in which each of the insulating isolation sections has a side wall having recessed sections and projected sections repeated along the first direction in a planar view taken from a direction vertical to a main face of the substrate; a first channel body provided in a first hole penetrating the second stacked body and the first stacked body; a first memory film including a first charge storage film provided between the first channel body and a side wall of the first hole; and an insulating sidewall film provided between the first memory film and each of the insulating isolation sections above the select gate, the insulating sidewall film extending along the first direction in a planar view taken from the direction vertical to the main face of the substrate, a permittivity of the insulating sidewall film being higher than a permittivity of a silicon oxide film, the first channel body having a column-shaped section provided under a region surrounded by the insulating sidewall film between the plurality of insulating isolation sections, and isolated by the insulating sidewall film in the first direction.