Patent ID: 8169123

Claim:
A multilayered piezoelectric element comprising: a multilayered structure in which plural piezoelectric material layers and at least one internal electrode are alternately stacked, at least one step formed on at least one side surface of said multilayered structure such that said multilayered structure has a region projecting from adjacent regions on the at least one side surface, and an end of said at least one internal electrode is located at the projecting region of said multilayered structure on either side surface thereof; at least one side insulating film for covering the end of said at least one internal electrode at the projecting region of said multilayered structure on the at least one side surface; a first flat electrode disposed on one principal surface of said multilayered structure; a second flat electrode disposed on the other principal surface of said multilayered structure; a first side electrode disposed on a first side surface of said multilayered structure and connected to a first group of electrodes as odd-numbered electrodes of said first and second flat electrodes and said at least one internal electrode; and a second side electrode disposed on a second side surface of said multilayered structure and connected to a second group of electrodes, which do not belong to the first group of electrodes, of said first and second flat electrodes and said at least one internal electrode.