Patent ID: 6717336
Filing Date: 2004-04-06
Classification: H03H

Abstract:
A piezoelectric quartz crystal resonator comprising:a vibrational portion having a length greater than a width thereof and a thickness smaller than the width; a plurality of connecting portions each integrally connected to respective end portions of the vibrational portion; a plurality of support portions integrally connected to the vibrational portion through the connecting portions; and a plurality of electrodes disposed opposite each other on upper and lower surfaces of the vibrational portion; wherein the piezoelectric quartz crystal resonator vibrates in a width-extensional mode and has a cutting angle in the range of one of xztw(âˆ’20Â° to +20Â°)/(âˆ’10Â° to +10Â°) and xzwt(âˆ’10Â° to +10Â°)/(âˆ’20Â° to +20Â°).