Title:
PIEZOELECTRIC RESONATOR, AND METHOD FOR MANUFACTURING PIEZOELECTRIC RESONATOR
Document Type and Number:
WIPO Patent Application WO/2023/286327
Kind Code:
A1
Abstract:
According to the present invention, changes over time in a resonant frequency are suppressed. A crystal resonator 1 comprises a base member 30, and a crystal resonating element 10 which is held on one surface of the base member 30 and which includes a crystal piece 11, and a first excitation electrode 14a and a second excitation electrode 14b provided on both main surfaces of the crystal piece 11, wherein: the first excitation electrode 14a and the second excitation electrode 14b each include a first metal layer 141 and a second metal layer 142 disposed between the first metal layer 141 and the crystal piece 11; and the weight ratio of the second metal layer 142 with respect to the first metal layer 141 is 0.1% to 1.1% inclusive.
Inventors:
YAMADA MITSUHIRO (JP)
OJIMA SHIGEO (JP)
OJIMA SHIGEO (JP)
Application Number:
PCT/JP2022/008919
Publication Date:
January 19, 2023
Filing Date:
March 02, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H3/04; H03H9/19
Foreign References:
| JP2008306594A | 2008-12-18 | |||
| JP2011160095A | 2011-08-18 | |||
| JP2014158149A | 2014-08-28 | |||
| JP2002057540A | 2002-02-22 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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