| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric resonator component which dispenses with an additional member such as coating or damping member to enable the production process thereof to be simplified and the cost thereof to be reduced and suppresses the influence of a fundamental wave of thickness longitudinal vibration when utilizing a third-order harmonic wave of thickness longitudinal vibration. SOLUTION: The piezoelectric resonator component 1 includes: an energy-trapped piezoelectric resonator 2 including a piezoelectric substrate 3 polarized in a direction of thickness and first and second vibrating electrodes 4, 5 partially formed on first and second major surfaces of the piezoelectric substrate 3 and utilizing a third-order harmonic wave of thickness longitudinal vibration; and first and second casing substrates 8, 10 respectively laminated on the piezoelectric resonator 2 so that cavities H are arranged so as not to interfere with vibration of a vibration section of he piezoelectric resonator 2. The first and second vibrating electrodes 4, 5 are dimensioned so that the difference between the peak values of the phases of S0 and S1 modes of the fundamental wave of the thickness longitudinal vibration falls within the range of±5 degrees. COPYRIGHT: (C)2005,JPO&NCIPI
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