Patent ID: 9312271
Filing Date: 2016-04-12
CPC Classification: H01L

Claim Text:
1. A non-volatile memory device, comprising: electrodes arranged in a first direction; an inter-layer insulating film between the electrodes; at least one semiconductor layer extending in the first direction through the electrodes and the inter-layer insulating film; a charge storage layer between the semiconductor layer and each of the electrodes; a first insulating film between the charge storage layer and the semiconductor layer; and a second insulating film including a first portion, a second portion, and a third portion, the first portion being provided between the charge storage layer and each of the electrodes, the second portion being provided between each of the electrodes and the inter-layer insulating film, the third portion linking the first portion and the second portion and having a curved surface on the charge storage layer side, the curved surface on the charge storage layer side having a curvature radius larger than a curvature radius of a surface on the electrodes side in a cross-section of the third portion parallel to the first direction and a second direction toward each of the electrodes from the charge storage layer.