Patent ID: 7705388

Claim:
A nonvolatile semiconductor memory device comprising: a source-line-side diode having an anode region that is connected to a source line; a bit-line-side diode having a cathode region that is connected to a bit line; and a memory cell string connected between a cathode region of the source-line-side diode and an anode region of the bit-line-side diode, the memory cell string including a series connection of a plurality of memory cell transistors containing a first stage transistor connected to the source-line-side diode and a last stage transistor connected to the bit-line-side diode, wherein the source-line-side diode is formed in a contact for connecting the source line and the memory cell string in a first direction perpendicular to a semiconductor substrate, and the bit-line-side diode is formed in a contact for connecting the bit line and the memory cell string in the first direction.