Patent ID: 7696502

Claim:
A bistable resistance value acquisition device characterized by comprising at least: a first metal oxide layer which is made of a metal oxide containing at least two metals, on a substrate, and has a predetermined thickness; a first electrode which is on one surface of said first metal oxide layer; a second electrode which is on another surface of said first metal oxide layer; and an insulating layer which is in contact with at least one of the one surface and said another surface of the first metal oxide layer, wherein the insulating layer is between the first metal oxide layer and one of the first and second electrodes; a second metal oxide layer which is made of the metal oxide, is formed on the substrate, and has a predetermined thickness; and a fourth electrode which is provided on said second metal oxide layer, wherein said first electrode, said first metal oxide layer, said second metal oxide layer, and said fourth electrode are connected in series in an order named.