Patent ID: 8710478

Claim:
A nonvolatile semiconductor storage device, comprising: a plurality of first wires extending in a first direction; a plurality of second wires extending in a second direction different from the first direction; and a plurality of memory cells disposed at respective points of intersection of the first wires and the second wires, wherein each of the memory cells includes: a diode disposed over the first wire, and coupled to the first wire at one end thereof; and a resistance change part disposed over the diode, and coupled in series to the diode at one end thereof, and coupled to the second wire at the other end thereof, and for storing information through a change in resistance value, wherein the diode includes: a first semiconductor layer of a first conductivity type; and a second semiconductor layer of a second conductivity type different from the first conductivity type, and wherein the second semiconductor layer extends into the inside of the first semiconductor layer.