| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric resonator capable of effectively suppressing vibrations other than third harmonics. SOLUTION: This piezoelectric resonator is formed by securing a pair of sealing bodies via a frame surrounding a facing area at both sides of a piezoelectric resonance element, adhered with a pair of vibrating electrodes arranged in both the principal planes of a rectangular piezoelectric substrate so as to partially face each other through the piezoelectric substrate and derived from the facing area in a facing directions parallel to one side of the piezoelectric substrate and generates fundamental waves of a prescribed frequency and its third harmonics within the facing area of the piezoelectric resonance element, accompanying the voltage applied to the vibrating electrodes. In the piezoelectric resonator, a vibration inhibitor, brought into partial contact with the vibrating electrodes only at the outer circumferential part of the facing area, is located in the central part of the facing area related to a direction parallel to the one side and/or the central part of the facing area related to a direction perpendicular to the one side between the piezoelectric resonance element and the sealing bodies, and a spatial layer, brought into contact with the vibrating electrodes, is located in the outer circumferential part of the facing area where the vibration inhibitor not exist. COPYRIGHT: (C)2006,JPO&NCIPI
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