摘要 |
A piezoelectric element of the present invention includes a substrate, a lower electrode layer, a piezoelectric layer, an upper electrode layer, a cavity portion formed below a piezoelectric vibrating portion, and at least two bridging portions. The at least two bridging portions are formed so as not to be line-symmetric with respect to any line segment traversing the piezoelectric vibrating portion and/or so as not to be point-symmetric with respect to any point in the piezoelectric vibrating portion in a projection of the piezoelectric vibrating portion in the laminating direction.
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