Patent ID: 8174171
Filing Date: 2012-05-08
Classification: H03H

Abstract:
1. A piezoelectric vibrating piece, comprising: a base having a first end edge, an opposing second end edge, and side edges extending from the first end edge to the second end edge; a pair of vibrating arms extending from the first end edge of the base in a designated longitudinal direction; a respective supporting arm extending from each side edge of the base, outboard of the vibrating arms, in the designated longitudinal direction, each supporting arm having a distal end and at least one mounting region near the distal end; a vibrating-root portion situated between the vibrating arms at the first end edge of the base; and respective supporting-root portions situated at the first end edge of the base between each vibrating arm and respective supporting arm; wherein each supporting arm has a longitudinal edge extending from the respective supporting root portion to the mounting region, each supporting arm progressively narrowing in the designated longitudinal direction from the proximal portion to the respective distal-end region; each vibrating arm has a longitudinal edge extending, opposite the longitudinal edge of the respective supporting arm; and the longitudinal edges extend in a symmetrical manner relative to a respective centerline extending in the designated longitudinal direction between the respective vibrating arm and supporting arm.