Method of manufacturing piezoelectric element, method of manufacturing oscillatory wave motor, method of manufacturing optical apparatus, and method of manufacturing electronic apparatus
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United States of America Patent
Stats
-
Sep 20, 2022
Grant Date -
Apr 16, 2020
app pub date -
Mar 1, 2018
filing date -
Mar 3, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a method of manufacturing a piezoelectric element in which, at a time when the piezoelectric element is manufactured, a piezoelectric material is prevented from being exposed to a temperature higher than a Curie temperature thereof to be depolarized, to thereby significantly decrease piezoelectric properties. The method of manufacturing a piezoelectric element includes a first step of arranging a plurality of electrodes on a piezoelectric material, electrically short-circuiting two or more electrodes of the plurality of electrodes, and subjecting the piezoelectric material to heat treatment, and a second step of, after the first step, electrically opening the short circuit of the two or more electrodes at a time when a temperature of the piezoelectric material decreases to less than a temperature of the piezoelectric material at a time of the heat treatment.
First Claim
Other Claims data not available
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International Classification(s)
- 2018 Application Filing Year
- H01L Class
- 30734 Applications Filed
- 24554 Patents Issued To-Date
- 79.90 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01L Class
- 0 % this patent is cited more than
- 3 Age
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