Patent ID: 7723904
Filing Date: 2010-05-25
Classification: H03B,H03H

Abstract:
1. An electronic apparatus comprising: a display portion; and at least one oscillating circuit comprising an amplifier, at least one resistor, a plurality of capacitors, and a unit having a case and a resonator, the case having two electrodes; wherein the resonator comprises a base portion, and a plurality of vibrational arms including a first vibrational arm and a second vibrational arm connected to the base portion, the vibrational arms being vibratable in a flexural mode; wherein at least one groove is formed in at least one of opposite main surfaces of each of the first and second vibrational arms; wherein at least one mounting arm protrudes from the base portion and extends in a common direction with at least one of the first and second vibrational arms; wherein an electrode is disposed in the at least one groove formed in at least one of the opposite main surfaces of each of the first and second vibrational arms; wherein the electrode disposed in the at least one groove formed in at least one of the opposite main surfaces of the first vibrational arm is electrically connected to one of the two electrodes of the case, and the electrode disposed in the at least one groove formed in at least one of the opposite main surfaces of the second vibrational arm is electrically connected to the other of the two electrodes of the case; and wherein an output signal of the at least one oscillating circuit comprising the resonator is a clock signal for use in operation of the electronic apparatus to display time information at the display portion.