Title:
PIEZOELECTRIC OSCILLATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/092776
Kind Code:
A1
Abstract:
This quartz oscillator (102) comprises a quartz oscillator plate (2) having a first excitation electrode (221) and a second excitation electrode (222) formed thereupon, a first sealing member (3) covering the first oscillation electrode (221) of the crystal oscillator plate (2), and a second sealing member (4) that covers the second oscillation electrode (222) of the quartz oscillator plate (2). The first sealing member (3) and the piezoelectric oscillator plate (2) are bonded to one another, the second sealing member (4) and the piezoelectric oscillator plate (2) are bonded to one another, and an internal space (13) which hermetically seals the oscillating part (22) of the quartz oscillator plate (2) is formed. In the internal space (13), the first excitation electrode (221) and the second excitation electrode (222) are not joined to one another electrically, and first and second shield electrodes (35, 44) connected to a constant potential (a ground potential, for example) are positioned therein.
Inventors:
KOJO TAKUYA (JP)
Application Number:
PCT/JP2017/040966
Publication Date:
May 24, 2018
Filing Date:
November 14, 2017
Export Citation:
Assignee:
DAISHINKU CORP (JP)
International Classes:
H03H9/02; H01L25/00; H03B5/32
Foreign References:
| JP2008066921A | 2008-03-21 | |||
| JP2010268439A | 2010-11-25 | |||
| JP2003008388A | 2003-01-10 | |||
| JP2014107649A | 2014-06-09 | |||
| JP2014030079A | 2014-02-13 |
Attorney, Agent or Firm:
ARC PATENT ATTORNEYS' OFFICE (JP)
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