Title:
PIEZOELECTRIC OSCILLATOR AND METHOD FOR MANUFACTURING PIEZOELECTRIC OSCILLATOR
Document Type and Number:
WIPO Patent Application WO/2022/137624
Kind Code:
A1
Abstract:
A crystal oscillator 1 comprising: a crystal oscillation element 10 that has a crystal piece 11, excitation electrodes 14a, 14b, and connection electrodes 16a, 16b; and a substrate 30 that has a substrate body 31, substrate electrodes 33a, 33b, and insulating layers 60a, 60b provided to the substrate electrodes 33a, 33b, wherein a through-hole 120 penetrating the crystal piece 11 in the thickness direction is provided in a region of the crystal piece 11, said region being in the vicinity of the excitation electrode 14a, and when a substrate body main surface 32a is viewed in planar view through the through-hole 120, the substrate electrodes 33a, 33b are covered by the insulating layers 60a, 60b in a location corresponding to the through-hole 120.
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Inventors:
YAGO SHIGEHISA (JP)
Application Number:
PCT/JP2021/027916
Publication Date:
June 30, 2022
Filing Date:
July 28, 2021
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H3/02; H03H9/10; H03H9/19
Domestic Patent References:
| WO2019188381A1 | 2019-10-03 | |||
| WO2016084417A1 | 2016-06-02 |
Foreign References:
| JP2020053802A | 2020-04-02 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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