Patent ID: 9349876
Filing Date: 2016-05-24
CPC Classification: H01L

Claim Text:
1. A nonvolatile semiconductor memory comprising: a multilayer structure in which control gate electrodes and interelectrode insulating films are alternately stacked, the multilayer structure having a through-hole extending in a stacking direction of the multilayer structure; a semiconductor region provided in the through-hole and extending in a direction along which the through-hole extends; a first insulating film provided between the semiconductor region and the multilayer structure; a charge storage film provided between the first insulating film and the multilayer structure; a second insulating film provided between the charge storage film and the multilayer structure; and a film provided on an outer periphery of the multilayer structure in a direction along which the through-hole extends, the film including a silicon nitride film with boron and extending along the control gate electrodes and interelectrode insulating films.