Patent ID: 8394669

Claim:
A method of manufacturing a resistance variable element comprising: a first electrode forming step of forming a first electrode on a substrate; a first resistance variable layer forming step of forming a first resistance variable layer comprising transition metal oxide, on the first electrode; an interlayer insulating layer forming step of forming an interlayer insulating layer on the first resistance variable layer; a through-hole forming step of forming a through-hole on the first resistance variable layer such that the through-hole penetrates the interlayer insulating layer; a second resistance variable layer forming step of forming a second resistance variable layer comprising transition metal oxide such that the second resistance variable layer is in contact with the first resistance variable layer only in the one of the openings of the through-hole, inside the through-hole, the second resistance variable layer being different in resistivity from the first resistance variable layer; and a step of forming a second electrode on the second resistance variable layer; wherein an electric resistance between the first electrode and the second electrode changes by application of an electric pulse between the first electrode and the second electrode.