| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric vibration piece which can implement downsizing while suppressing stiffness reduction and have excellent vibration characteristics, and to provide a piezoelectric vibrator, oscillator, electronic apparatus, and radio clock having the same.SOLUTION: A piezoelectric vibration piece comprises: a pair of vibration arm parts 10 and 11 arranged in parallel with each other; a base unit for integrally fixing base end parts of the pair of vibration arm parts in the longitudinal direction; and groove parts 25 which are formed on main faces 10b and 11b of the pair of vibration arm parts 10 and 11, and extend along the longitudinal direction. The groove parts 25 comprise first groove parts 26 formed on the top part side of the vibration arm parts 10 and 11, and second groove parts 27 formed between the first groove parts 26 and the base end parts of the vibration arm parts 10 and 11, where the second groove parts 27 are arranged so as to be offset in the -X axis direction from the first groove parts 26. |
