Patent ID: 8598643

Claim:
A nonvolatile semiconductor memory device comprising: a semiconductor substrate; a first conductive layer formed above the semiconductor substrate; a second conductive layer, a first inter electrode insulating film, and a third conductive layer sequentially stacked above the first conductive layer; a block insulating film formed on an inner surface of each of through holes provided in the second conductive layer, the first inter electrode insulating film, and the third conductive layer and extending in a stacking direction; a charge storage layer formed on the block insulating film; a tunnel insulating film formed on the charge storage layer; a semiconductor layer formed on the tunnel insulating film; an insulating member buried in a slit located between the adjacent through holes to divide the second conductive layer, the first inter electrode insulating film, and the third conductive layer; and a silicide layer formed on each of surfaces of the second conductive layer and the third conductive layer in the slit, wherein a distance between the second conductive layer and the third conductive layer along an inner surface of the slit is longer than that along the stacking direction.