Patent ID: 8063546

Claim:
A vibratory structure comprising: a first X-cut crystal substrate; a second X-cut crystal substrate stacked on the first X-cut crystal substrate so that the x-axis of the second X-cut crystal substrate is parallel to the x-axis of the first X-cut crystal substrate; a base formed by the first X-cut crystal substrate and the second X-cut crystal substrate; vibratory arm sections formed so as to be integrated together with the base in one body, and protruding from the base; an intermediate electrode sandwiched between the first X-cut crystal substrate and the second X-cut crystal substrate; a first drive electrode formed on an upper face of the vibratory arm section, the upper face being perpendicular to the x-axis of the vibratory arm section; and a second drive electrode formed on a back face of the vibratory arm section, the back face being perpendicular to the x-axis of the vibratory arm section, wherein a first voltage is supplied to both the first drive electrode and the second drive electrode, and a second voltage which has a phase opposite to the first voltage is supplied to the intermediate electrode.