Piezoelectric vibration reed, piezoelectric vibrator, oscillator, electronic instrument, and radio timepiece

Abstract

A piezoelectric vibration reed which is capable of inhibiting vibrations of a vibrating arm portion in the thickness direction and inhibiting the increase in CI value and a vibration leak, a piezoelectric vibrator, an oscillator, an electronic instrument, and a radio timepiece using the piezoelectric vibration reed is provided. A piezoelectric vibration reed includes: a pair of vibrating arm portions arranged side by side; groove portions formed on both main surfaces of the vibrating arm portions and extending in the Y direction (the longitudinal direction) of the vibrating arm portions; a base portion connecting the pair of vibrating arm portions; and the groove portions are each formed in the interior thereof with a rib extending from a wall surface on a −Y side (proximal end side) to a +Y side (distal end side).

Dependencies are inferred from the claim text.