PIEZOELECTRIC VIBRATING STRIP, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC DEVICE, AND RADIO TIMEPIECE
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United States of America Patent
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N/A
Issued Date -
Jan 30, 2014
app pub date -
Jul 25, 2013
filing date -
Jul 26, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
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.
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