| 摘要 |
<p>Disclosed is a laminated piezoelectric element in which a reduction in the amount of displacement resulting from a long-time drive is improved. The laminated piezoelectric element comprises a laminate including a plurality of piezoelectric bodies and a plurality of internal electrodes that are laminated alternately, a first external electrode formed on the first side surface of the laminate, and a second external electrode formed on the second side surface of the same, wherein the internal electrodes insulated and separated at the first and second side surfaces are arranged alternately so that the plurality of internal electrodes are connected alternately with any one of the first and second external electrodes, the laminate is sectioned into a facing portion where adjoining internal electrodes face each other in the direction of lamination and a non-facing portion provided along the first and second side faces while facing every other internal electrode, and at least one of the plurality of internal electrodes has, in that internal electrode, a plurality of internal-electrode-not-formed parts along the boundary of the facing portion and the non-facing portion.</p> |
