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METHODS FOR ADJUSTING FREQUENCY OF PIEZOELECTRIC VIBRATING PIECES, PIEZOELECTRIC DEVICES, AND TUNING-FORK TYPE PIEZOELECTRIC OSCILLATORS

  • US 20090174286A1
  • Filed: 01/07/2009
  • Published: 07/09/2009
  • Est. Priority Date: 01/09/2008
  • Status: Abandoned Application
First Claim
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1. A piezoelectric frame, comprising:

  • a tuning-fork type piezoelectric vibrating piece comprising a base portion, at least a pair of vibrating arms extending in a first direction from one edge of the base portion, and respective excitation electrodes on the vibrating arms;

    a respective supporting arm extending in the first direction from an external edge of each vibrating arm;

    an outer frame portion surrounding the tuning-fork type piezoelectric vibrating piece; and

    respective connecting portions having designated widths connecting the supporting arms to the outer frame portion.

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