Patent ID: 9019763
Filing Date: 2015-04-28
Classification: G11C,H01L

Abstract:
1. A nonvolatile semiconductor memory device, comprising: a transistor string formed on a substrate and including a plurality of first transistors connected in series with each other; a first bit line connected to a first end of the transistor string; a source line connected to a second end of the transistor string; a memory string that extends in a direction perpendicular to the substrate and comprises a plurality of nonvolatile memory transistors and a select transistor connected in series, a first end of the memory string being connected to a gate of the first transistor; a word line connected to a control gate of the memory transistors; a select gate line connected to a control gate of the select transistor; a second bit line connected to a second end of the memory string via the select transistor; and a control unit configured to control the first bit line, the source line, the word line, the select gate line, and the second bit line.