Patent ID: 8127426

Claim:
An electronic apparatus comprising: a display portion; and a plurality of quartz crystal oscillating circuits including a first quartz crystal oscillating circuit and a second quartz crystal oscillating circuit, each of the first and second quartz crystal oscillating circuits having a quartz crystal resonator; wherein a mode of vibration of the quartz crystal resonator of the first quartz crystal oscillating circuit is different from that of the quartz crystal resonator of the second quartz crystal oscillating circuit: wherein the quartz crystal resonator of the first quartz crystal oscillating circuit comprises a quartz crystal tuning fork resonator capable of vibrating in a flexural mode of an inverse phase and having a quartz crystal tuning fork base, and first and second quartz crystal tuning fork tines connected to the quartz crystal tuning fork base, each of the first and second quartz crystal tuning fork tines having main surfaces and side surfaces; wherein an electrode is disposed on each of two of the side surfaces of each of the first and second quartz crystal tuning fork tines so that the electrodes disposed on the side surfaces of the first quartz crystal tuning fork tine have an electrical polarity opposite to an electrical polarity of the electrodes disposed on the side surfaces of the second quartz crystal tuning fork tine, a capacitance ratio r 1 of a fundamental mode of vibration of the quartz crystal tuning fork resonator being less than a capacitance ratio r 2 of a second overtone mode of vibration thereof; wherein the quartz crystal tuning fork resonator is mounted on a mounting portion of a case and a lid is connected to the case; and wherein an output signal of the first quartz crystal oscillating circuit comprising the quartz crystal tuning fork resonator is a clock signal for use in operation of the electronic apparatus to display time information at the display portion.