US Patent 7560724 Storage device with reversible resistance change elements

It is intended to provide a storage element having an arrangement which becomes able to be manufactured easily with high density. A storage element includes resistance changing elements 10 having recording layers 2, 3 provided between two electrodes 1, 4 and in which resistance values of the recording layers 2, 3 are reversibly changed with application of electric potential with different polarities to these two electrodes 1, 4, at least part of the layers 2, 3 constructing the recording layers of the resistance changing elements 10 being formed commonly by the same layer in a plurality of adjacent memory cells.