PIEZOELECTRIC VIBRATION PIECE, PIEZOELECTRIC TRANSDUCER, OSCILLATOR, ELECTRONIC APPARATUS, AND RADIO CONTROLLED WATCH

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric vibration piece which can restrict the vibration of a vibration arm part in a thickness direction to thereby suppress a rise in a CI value and vibration leakage, and provide a piezoelectric transducer, an oscillator, an electronic apparatus and a radio controlled watch using the piezoelectric vibration piece.;SOLUTION: In a piezoelectric vibration piece 4 comprising a pair of juxtaposed vibration arm parts 10 and 11, groove parts 51 formed on both principal planes of the vibration arm parts 10 and 11 and extending in the Y direction (longer direction) of the vibration arm parts 10 and 11, and a base part 12 having the pair of vibration arm parts 10 and 11 connected thereto, the groove parts 51 have a rib 53 formed therein, which extends from the wall surface on a -Y side (base end side) toward a +Y side (tip side).;COPYRIGHT: (C)2013,JPO&INPIT