Stacked element and vibration drive device
First Claim
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1. A stack element comprising:
- a plurality of layers of an electromechanical energy transducing material; and
layers 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.
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Abstract
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.
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Citations
17 Claims
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1. A stack element comprising:
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a plurality of layers of an electromechanical energy transducing material; and layers 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, and wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vibration drive device comprising:
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a stack element in which a plurality of layers of an electromechanical energy transducing material and layers of an electrode material are stacked alternately; and a vibrating body arranged to vibrate with vibration of said stack element, wherein said electrode material contains silver in a metal component and said silver is less than 50% by weight and wherein said stack element is subjected to a polarization process with said plurality of layers of the electrode material after sintering, 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. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification