Patent ID: 8546872

Claim:
A nonvolatile semiconductor memory device comprising: a semiconductor substrate; first, second, third and fourth fin-type stacked layer structures, each having memory strings stacked in a first direction perpendicular to a surface of the semiconductor substrate, and each extending in a second direction parallel to the surface of the semiconductor substrate; a first part connected to first ends in the second direction of the first and second fin-type stacked layer structures stacked with respect to each other; a second part connected to first ends in the second direction of the third and fourth fin-type stacked layer structures stacked with respect to each other; a third part connected to second ends in the second direction of the first and third fin-type stacked layer structures stacked with respect to each other; and a fourth part connected to second ends in the second direction of the second and fourth fin-type stacked layer structures stacked with respect to each other, wherein each of the memory strings in the first and second fin-type stacked layer structures uses the first part as a source area and uses the third and fourth parts as a drain area, and each of the memory strings in the third and fourth fin-type stacked layer structures uses the second part as the source area and uses the third and fourth parts as the drain area, wherein each of the memory strings has memory cells connected in series in the second direction, each of the memory cells has a semiconductor layer and a stacked gate structure provided on a side surface of the semiconductor layer in a third direction perpendicular to the first and second directions, and the stacked gate structure includes a first insulating layer, a charge storage layer, a second insulating layer and a control gate electrode stacked with respect to each other, wherein the control gate electrodes of the memory cells arranged in the first direction in each of the first, second, third and fourth fin-type stacked layer structures are connected to each other.