Piezoelectric resonator.

摘要

A piezoelectric resonator comprises a rectangular parallelepiped resonator chip. A lithium niobate single crystal (4) is used as the resonator chip material. Each ofthe opposed main surfaces of the resonator chip is arranged to be a surface of a rotated Y-cut plate (2) which is rotated by an angle (θ) of 165 ±5 degrees about an X-axis. The angle of the longitudinal direction of the resonator chip is arranged to be 90 ±5 degrees with respect to the X-axis of the rotated Y-cut plate.