Piezoelectric resonator with a resonance frequency adjusting notch

摘要

In a piezoelectric resonator 11 in which resonance electrodes 13 and 14 are formed on both major surfaces of a rectangular plane piezoelectric plate 12 and which utilizes stretching vibration along the short side of the piezoelectric plate 12, notches 15 and 16 are partially formed on the long sides of the piezoelectric plate 12, respectively in order to increase the resonance frequency.