Title:
FREQUENCY ADJUSTMENT METHOD FOR PIEZOELECTRIC OSCILLATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/079181
Kind Code:
A1
Abstract:
[Problem] To provide a frequency adjustment method for a piezoelectric oscillation device, the method responding to microminiaturization and enabling frequency adjustment without decreasing frequency adjustment accuracy. [Solution] A frequency adjustment method for a tuning fork-type quartz oscillator according to the present invention is designed to perform frequency adjustment by reducing the mass of an adjustment metal film W formed in an oscillation arm 31, 32 of a tuning fork-type quartz oscillation piece 1, and comprises: a coarse adjustment step for performing coarse adjustment of frequency by thinning or removing part of the adjustment metal film W; and a fine adjustment step for performing fine adjustment of frequency by thinning or removing at least part of a product W1, W2 from the adjustment metal film W, the product being generated in the coarse adjustment step.
Inventors:
YAMASHITA HIROAKI (JP)
Application Number:
PCT/JP2017/035310
Publication Date:
May 03, 2018
Filing Date:
September 28, 2017
Export Citation:
Assignee:
DAISHINKU CORP (JP)
International Classes:
H03H3/04
Domestic Patent References:
| WO2016136015A1 | 2016-09-01 |
Foreign References:
| JP2009232376A | 2009-10-08 | |||
| JP2013183416A | 2013-09-12 | |||
| JP2016092463A | 2016-05-23 |
Attorney, Agent or Firm:
ARC PATENT ATTORNEYS' OFFICE (JP)
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