Title:
PIEZOELECTRIC VIBRATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/110557
Kind Code:
A1
Abstract:
A quartz oscillator (101), wherein a quartz vibration plate (2), a first sealing member (3) covering a first excitation electrode of the quartz vibration plate (2), and a second sealing member (4) covering a second excitation electrode of the quartz vibration plate (2) are bonded by a bonding pattern layer, and an internal space, in which a vibration part (22) of the quartz vibration plate (2) including the first excitation electrode and the second excitation electrode is hermetically sealed, is formed. The bonding pattern layer includes: a sealing pattern layer (e.g., vibration-side first bonding pattern (251)), which is formed in an annular shape so as to enclose the vibration part (22) in plan view, thereby hermetically sealing the internal space; and an electroconductive pattern layer (e.g., connection bonding patterns (253)) for electrically connecting wiring and the electrodes. The electroconductive pattern layer is disposed in a closed space surrounded by the sealing pattern layer. The sealing pattern layer is imparted with a GND potential when the quartz oscillator (101) operates.
Inventors:
ISHINO SATORU (JP)
KOJO TAKUYA (JP)
KOJO TAKUYA (JP)
Application Number:
PCT/JP2019/042285
Publication Date:
June 04, 2020
Filing Date:
October 29, 2019
Export Citation:
Assignee:
DAISHINKU CORP (JP)
International Classes:
H03H9/02; H03B5/32; H03H9/19
Domestic Patent References:
| WO2016121182A1 | 2016-08-04 | |||
| WO2018092776A1 | 2018-05-24 | |||
| WO2018092572A1 | 2018-05-24 |
Foreign References:
| JP2008066921A | 2008-03-21 | |||
| JP2010252051A | 2010-11-04 | |||
| JP2018046476A | 2018-03-22 |
Attorney, Agent or Firm:
ARC PATENT ATTORNEYS' OFFICE (JP)
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