Patent ID: 6911765
Filing Date: 2005-06-28
Classification: H03H

Abstract:
1. A quartz crystal tuning fork resonator capable of vibrating in a flexural mode, the quartz crystal tuning fork resonator comprising: a plurality of quartz crystal tuning fork tines for undergoing vibration in an inverse phase, each of the quartz crystal tuning fork tines having a first main surface and a second main surface opposite the first main surface, each of the first and second main surfaces having a central linear portion; a quartz crystal tuning fork base to which the quartz crystal tuning fork tines are attached; and at least one groove formed in the central linear portion of each of the first and second main surfaces of each of the quartz crystal tuning fork tines, a width of the groove in the central linear portion of one of the first and second main surfaces of each of the quartz crystal tuning fork tines being greater than or equal to a distance in the width direction of the groove measured from an outer edge of the groove to an outer edge of the tuning fork tine.