Piezoelectric Element and Audio Device
First Claim
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1. A piezoelectric element comprising:
- a plurality of stacked piezoelectric sheets each piezoelectric sheet having a respective predetermined stretching axis and having a main constituent including a helical polymer with a chiral molecule as a unit; and
electrodes on opposed principal surfaces of each of the piezoelectric sheets, whereinat least a first piezoelectric sheet of the plurality of piezoelectric sheets is different from a second piezoelectric sheet of the plurality of piezoelectric sheets in a direction of the respective predetermined stretching axis.
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Abstract
A piezoelectric element including a plurality of stacked piezoelectric sheets, wherein the stretching axis of a first piezoelectric sheet and the stretching axis of a second piezoelectric sheet of the plurality of piezoelectric sheets are oriented in different directions from each other. Preferably, the stretching axis of the first piezoelectric sheet and the stretching axis of the second piezoelectric sheet are intersected at an angle of 90 degrees.
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Citations
12 Claims
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1. A piezoelectric element comprising:
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a plurality of stacked piezoelectric sheets each piezoelectric sheet having a respective predetermined stretching axis and having a main constituent including a helical polymer with a chiral molecule as a unit; and electrodes on opposed principal surfaces of each of the piezoelectric sheets, wherein at least a first piezoelectric sheet of the plurality of piezoelectric sheets is different from a second piezoelectric sheet of the plurality of piezoelectric sheets in a direction of the respective predetermined stretching axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification