Patent ID: 7936004

Claim:
A nonvolatile semiconductor memory device comprising a plurality of memory strings arranged in a matrix shape in a row direction and a column direction, the plurality of memory strings including at least one memory string having a plurality of electrically programmable memory cells connected in series, wherein the at least one memory string of the plurality of memory strings comprises a pillar shaped semiconductor, a first insulation film formed around the pillar shaped semiconductor, a charge storage layer formed around the first insulation film, a second insulation film formed around the charge storage layer, and first to nth electrodes formed around the second insulation film (n is a natural number not less than 2); and wherein the first to the nth electrodes of the at least one memory string are shared with a second memory string adjacent to the at least one memory string in the column direction and a third memory string adjacent to the at least one memory string in the row direction.