Device sub-layer and the electrode layer having the electrode layer of the electrode layer and the negative of the amount of repeat laminated vertically to each other alternately in the element sub-layer and, as the main positive electrode connecting member for interconnecting the positive electrode layer, the negative interconnection of the electrode layers of the Note the negative electrode connecting member and the interconnect the positive electrode layer and connecting the at least one spare anode connection member and the electrode layer of the negative to be spaced from the said main positive electrode connecting member mutually, and at least a spaced apart arrangement with the main negative electrode connecting members includes one or more pre-cathode connection member, the main positive electrode connecting member and the main connection to the negative electrode connecting member are spaced from the main and the main electrodes consisting of a pair of electrodes, the electrodes and the preliminary negative electrode connected to the spare anode connection member the piezoelectric element further comprises at least one pre-electrode consisting of a pair of electrodes is disclosed to be connected to the member.