PIEZOELECTRIC ACTUATOR AND APPARATUS FOR GENERATING VIBRATIONS INCLUDING THE SAME

摘要

There is provided a piezoelectric actuator including: positive electrode layers and negative electrode layers iteratively alternately vertically laminated; piezoelectric element layers interposed between the positive electrode layers and the negative electrode layers, respectively; a positive electrode (or anode) connection pillar provided in a position corresponding to less than 50% of maximum displacement in the event of driving and penetrating the electrode layers and the piezoelectric element layers to connect the positive electrode layers; and a negative electrode (or cathode) connection pillar provided in a position corresponding to less than 50% of maximum displacement in the event of driving and penetrating the electrode layers and the piezoelectric element layers to connect the negative electrode layers.

主权项

1. A piezoelectric actuator comprising:
positive electrode layers and negative electrode layers iteratively alternately vertically laminated; piezoelectric element layers interposed between the positive electrode layers and the negative electrode layers, respectively; a positive electrode connection pillar provided in a position corresponding to less than 50% of maximum displacement in the event of driving and penetrating the electrode layers and the piezoelectric element layers to connect the positive electrode layers; and a negative electrode connection pillar provided in a position corresponding to less than 50% of maximum displacement in the event of driving and penetrating the electrode layers and the piezoelectric element layers to connect the negative electrode layers.