| 摘要 |
A piezoelectric vibrating strip, a piezoelectric vibrator, an oscillator, an electronic device, and a radio timepiece, in which the CI value can be reduced further while preventing a vibrating arm portion from vibrating in a second warp mode. The piezoelectric vibrating strip includes a plurality of parallel vibrating arm portions in a width direction, a base portion couples base ends of the vibrating arm portions, and a groove portion resides in at least one of a main face and a back face of the vibrating arm portion and extends from proximate the base end toward a free end of the vibrating arm portion. A break portion divides the groove portion and suppresses warp deformation of the vibrating arm portion in a second warp mode between a vibrating node portion of the vibrating arm portion proximate the base end and a vibrating node portion proximate the free end. |
