초록 ▼

A vibration drive device including a stack element in which a plurality of layers of an electromechancial energy transducing material and layers of an electrode material are stacked alternately, and a vibrating body is arranged to vibrate with vibration of the stack. The electrode material contains

A vibration drive device including a stack element in which a plurality of layers of an electromechancial energy transducing material and layers of an electrode material are stacked alternately, and a vibrating body is arranged to vibrate with vibration of the stack. The electrode material contains silver in a metal component and the silver is less than 50% by weight.

대표청구항 ▼

[ What is claimed is:] [1.] A stack element comprising:a plurality of layers of an electromechanical energy transducing material; andlayers of an electrode material stacked alternately with said layers of the energy transducing material,wherein said electrode material contains silver in a metal comp

[ What is claimed is:] [1.] A stack element comprising:a plurality of layers of an electromechanical energy transducing material; andlayers of an electrode material stacked alternately with said layers of the energy transducing material,wherein said electrode material contains silver in a metal component and said silver is less than 50% by weight and contains 50 or more % by weight of palladium, andwherein said stack element is subjected to a polarization process with said plurality of layers of the electrode material, with each of said plurality of layers of the electrode material being divided into a plurality of areas, and said plurality of areas polarized in different directions, with said stack element vibrating based on a combination of plural bending vibrations.