Patent ID: 7741932
Filing Date: 2010-06-22
Classification: H03H

Abstract:
1. A torsional resonator comprising a vibrator for executing mechanical vibration and electrodes positioned close to the vibrator and having an electromechanical conversion function of converting voltage change between the vibrator and the electrodes into vibration of the vibrator, wherein the vibrator comprises a beam structure, and wherein the torsional resonator comprises a drive unit, which is configured so that an electrostatic force produced due to the potential difference between the electrodes and the vibrator produces a moment with the axis of the beam structure as the center axis, and is configured so as to apply DC bias voltages different in polarity and the same AC signal to an electrode pair of the electrodes, wherein the electrode pair includes one electrode brought away from the vibrator and one electrode brought close to the vibrator with torsional vibration of the vibrator.