Patent ID: 8994180
Filing Date: 2015-03-31
Classification: G11C,H01L

Abstract:
1. 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, at least one of the word lines at the first select gate line side extends in the second direction, is bent toward the first select gate line side, is connected to a contact plug, and has a distal end, and on a second side of the block opposite to the first side, the at least one of the word lines at the first select gate line side has no bent points, and is not connected to contact plugs.