Patent ID: 8786096

Claim:
A nonvolatile semiconductor memory comprising: cell units each having a first select gate transistor, a second select gate transistor, memory cells connected in series in a first direction and provided between the first and second select gate transistors; and a block comprising the cell units arranged in a second direction which crosses the first direction and having a first select gate line extending in the second direction and connected to the first select gate transistors, a second select gate line extending in the second direction and connected to the second select gate transistors, and word lines extending in the second direction, respectively connected to the memory cells; wherein: on a first side of the block, the word lines extend in the second direction, are respectively connected to contact plugs, respectively have distal ends, at least one of the word lines at the first select gate line side is bent toward the first select gate line side, at least one of the word lines at the second select gate line side is bent toward the second select gate line side, and on a second side of the block opposite to the first side, the word lines extend in the second direction, have no bent points, and are not connected to contact plugs.