METHOD FOR ADJUSTING FREQUENCY OF PIEZOELECTRIC RESONATOR DEVICE AND PIEZOELECTRIC RESONATOR DEVICE
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United States of America
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Issued Date -
Jan 30, 2025
app pub date -
Sep 22, 2022
filing date -
Sep 22, 2022
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Abstract
In a method for adjusting a frequency of a crystal resonator, a frequency adjustment metal film made of a base metal layer and a metal layer laminated thereon is formed on a first main surface of a second sealing member on a side facing a second excitation electrode. The second sealing member is made of crystal. The frequency adjustment metal film is irradiated with a laser from the outside of the second sealing member so that the laser penetrates the interior of the second sealing member and heats the base metal layer. Then, at least part of the metal layer is melted and evaporated, and the evaporated metal is adhered to the second excitation electrode. Thus, the frequency adjustment is performed.
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