Patent ID: 8759190

Claim:
A method of manufacturing a current steering element comprising the steps of: forming a lower wire; forming a first electrode layer such that the first electrode layer is electrically connected to the lower wire; forming a current steering layer on the first electrode layer such that the current steering layer physically contacts the first electrode layer; forming a second electrode layer on the current steering layer such that the second electrode layer physically contacts the current steering layer; forming a corrosion-suppressing layer on the second electrode layer using a material having a higher standard electrode potential than a material of the second electrode layer; forming an interlayer insulating layer such that the interlayer insulating layer covers the corrosion-suppressing layer, the second electrode layer, the current steering layer and the first electrode layer; forming a via hole in the interlayer insulating layer such that an entire portion of the lower opening of the via hole opens on the corrosion-suppressing layer; and washing an interior of the via hole using a washing liquid containing water.