Piezoelectric actuator, piezoelectric vibration device, and portable terminal
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United States of America Patent
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May 29, 2018
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N/A
app pub date -
Oct 31, 2013
filing date -
Nov 30, 2012
priority date (Note) -
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Abstract
A piezoelectric actuator which is capable of reduction of noise resulting from vibration of a piezoelectric element, a piezoelectric vibration device, and a portable terminal are provided. A piezoelectric actuator includes a piezoelectric element including a stacked body composed of internal electrodes and piezoelectric layers which are laminated, and a surface electrode disposed on one of main surfaces of the stacked body so as to be electrically connected to the internal electrodes; a flexible substrate electrically connected to the surface electrode; and a shock-absorbing material disposed on the flexible substrate. The shock-absorbing material, at least partly, is disposed on a first region of the flexible substrate which overlaps with the piezoelectric element.
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