Title:
METHOD FOR MANUFACTURING PIEZOELECTRIC OSCILLATOR
Document Type and Number:
WIPO Patent Application WO/2018/212184
Kind Code:
A1
Abstract:
The method for manufacturing the piezoelectric oscillator (1) involves: a step for preparing a piezoelectric vibration element (10) comprising a piezoelectric substrate (11) having a first principal surface (12a) and a second principal surface (12b) facing the first principal surface (12a), and one pair of excitation electrodes (14a, 14b) disposed on the first principal surface (12a) and second principal surface (12b) of the piezoelectric substrate (11) so as to face each other across the piezoelectric substrate (11); a step for preparing a base member (30); a step for holding the piezoelectric vibration element (10) atop the base member (30) by means of electroconductive holding members (36a, 36b); and a step for performing frequency adjustment on the piezoelectric vibration element (10). The method further involves a step for overexciting the piezoelectric vibration element (10) by supplying to the piezoelectric vibration element (10) a power greater than the drive power during use, the supplying being performed in either the period before or after the frequency adjustment of the piezoelectric vibration element (10). In the step for overexciting the piezoelectric vibration element (10), a cumulative amount of energy corresponding to at least 310 mWs and less than 1,240 mWs is supplied to the piezoelectric vibration element (10).
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Inventors:
TANAKA HIROFUMI (JP)
TAKAHASHI SEITA (JP)
TAKAHASHI SEITA (JP)
Application Number:
PCT/JP2018/018773
Publication Date:
November 22, 2018
Filing Date:
May 15, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H3/04
Foreign References:
| JP2016144092A | 2016-08-08 | |||
| JP2017055280A | 2017-03-16 | |||
| JP2016178404A | 2016-10-06 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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