Title:
CRYSTAL OSCILLATION ELEMENT, CRYSTAL OSCILLATOR, AND METHOD FOR MANUFACTURING CRYSTAL PIECE
Document Type and Number:
WIPO Patent Application WO/2017/221887
Kind Code:
A1
Abstract:
This invention is provided with: an AT-cut crystal piece including a first main surface (12a) and a second main surface (12b) facing each other and having long edges in the x-axis direction and short edges in the z-axis direction of a quartz crystal, and a first side surface (13) and a second side surface (14) located on a long-edge side of the first main surface (12a) and the second main surface (12b); a first excitation electrode (15a) and a second excitation electrode (15b); and a lead-out electrode (16) electrically connected to the first excitation electrode (15a), the lead-out electrode (16) being led out from the first main surface (12a) through the first side surface (13) until the second main surface (12b) is reached. In the width direction orthogonal to the long edges in the x-axis direction, the width Wa1 of a first m-surface (13a) of the first side surface (13) is greater than the width Wa2 of the second m-surface (14a) of the second side surface (14).
Inventors:
KIDU TORU (JP)
SAI KOKI (JP)
SAI KOKI (JP)
Application Number:
PCT/JP2017/022517
Publication Date:
December 28, 2017
Filing Date:
June 19, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/19
Foreign References:
| JP2016034107A | 2016-03-10 | |||
| JP2015186239A | 2015-10-22 | |||
| JP2014011650A | 2014-01-20 | |||
| JP2008067345A | 2008-03-21 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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