Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 4, 2015
Patent Application Number
13655804
Date Filed
October 19, 2012
Patent Citations Received
Patent Primary Examiner
Patent abstract
A piezoelectric device includes an elastic member, an electrical-mechanical energy conversion element fixed to the elastic member, configured to cause the elastic member to generate vibration, and a supporting member that supports the elastic member. The electrical-mechanical energy conversion element is formed of a piezoelectric material in which, in a usage temperature range of the piezoelectric device, a piezoelectric constant decreases along with temperature rise. A supporting member that supports the elastic member is formed of a material in which, in the usage temperature range of the piezoelectric device, Q value increases along with temperature rise.
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