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Patent Searching and Data


Title:
QUARTZ OSCILLATION PLATE AND QUARTZ OSCILLATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/042994
Kind Code:
A1
Abstract:
[Problem] To provide more reliable quartz oscillation plate and quartz oscillation device which have enhanced impact resistance and in which deterioration of electric characteristics is suppressed. [Solution] An AT-cut quartz oscillation plate 2 is provided with: an oscillation part 22 that is rectangular in plan view and has excitation electrodes formed, at the central part, on the main front and back surfaces; a cutout part 21 that is rectangular in plan view and is formed at the outer periphery of the oscillation part; an outer frame part 23 that is rectangular in plan view and is formed at the outer periphery of the cutout part; and one connection part 24 that connects the oscillation part and the outer frame part and extends, along a Z'-axis direction of the oscillation part, from one end portion of a side along an X-axis direction of the oscillation part. Wide parts 24a, 24b, having widths gradually increasing toward only the outer frame part, are formed at the connection part.

Inventors:
MORIMOTO, Yoshinari (1389 Aza-Kono, Shinzaike, Hiraoka-cho, Kakogawa-sh, Hyogo 94, 〒6750194, JP)
YAMAUCHI, Ryota (1389 Aza-Kono, Shinzaike, Hiraoka-cho, Kakogawa-sh, Hyogo 94, 〒6750194, JP)
Application Number:
JP2017/027665
Publication Date:
March 08, 2018
Filing Date:
July 31, 2017
Export Citation:
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Assignee:
DAISHINKU CORPORATION (1389, Aza-Kono Shinzaike, Hiraoka-cho, Kakogawa-sh, Hyogo 94, 〒6750194, JP)
International Classes:
H03H9/19; H03H9/02
Domestic Patent References:
WO2016121182A12016-08-04
Foreign References:
JP2013098814A2013-05-20
JP2015019240A2015-01-29
JP2010087575A2010-04-15
Attorney, Agent or Firm:
ARC PATENT ATTORNEYS' OFFICE (1-2 Sonezaki 1-chome, Kita-ku Osaka-sh, Osaka 57, 〒5300057, JP)
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