Patent ID: 7095643

Claim:
A device comprising: a substrate having circuitry; a first layer of x-direction conductive array lines being located above the substrate and in electrical communication with the circuitry; a first plurality of bottom electrodes being located above the first layer of x-direction conductive array lines and in electrical contact with the first layer of x-direction conductive array lines; a first plurality of top electrodes being located above the first plurality of bottom electrodes and in electrical communication with the first plurality of bottom electrodes such that each top electrode from the first plurality of top electrodes has a corresponding bottom electrode from the first plurality of bottom electrodes, wherein a read voltage across corresponding top and bottom electrodes can be used to determine a non-volatile resistive state that can be reversibly modified with write voltage pulses across corresponding top and bottom electrodes; a layer of y-direction conductive array lines located above the first plurality of top electrodes and in electrical contact with the first plurality of top electrodes; a second plurality of bottom electrodes being located above the layer of y-direction conductive array lines and in electrical contact with the layer of y-direction conductive array lines; a second plurality of top electrodes being located above the second plurality of bottom electrodes and in electrical communication with the second plurality of bottom electrodes such that each top electrode from the second plurality of top electrodes has a corresponding bottom electrode from the second plurality of bottom electrodes; and a second layer of x-direction conductive array lines located above the second plurality of top electrodes and in electrical contact with the second plurality of top electrodes.