Abstract: The invention is directed to the provision of a method for manufacturing a crystal oscillator manufacturing method that can achieve a highly precise fine adjustment without applying unnecessary external force to a crystal oscillator, and that can adjust a plurality of crystal oscillators in a collective manner. More specifically, the invention provides a method for manufacturing a crystal oscillator includes a first etching step for forming a prescribed external shape, an electrode forming step for forming an electrode at least in a portion of a surface of the external shape, a leakage amount measuring step for measuring leakage amount associated with leakage vibration of the external shape, and a second etching step for etching the external shape by an amount that is determined based on a measurement result of the leakage amount measuring step so as to adjust balance.

Abstract: A piezoelectric device has a piezoelectric vibration element mounted in a package wherein the piezoelectric vibration element comprises two stick-like vibration legs; a central leg provided between the two vibration legs; a coupling portion that couples one end of each of the two vibration legs and one end of the central leg; and a protrusion portion that is coupled to another end of the central leg, has a predetermined angle, neither 0 nor 180 degrees, to the length direction of the central leg, and extends into a direction not interfering with the driving legs. In making the piezoelectric device smaller and thinner, this configuration avoids interference between a support point on the central leg, provided for supporting the vibration element, and conductive electrodes, improves insulation between the conductive electrodes, and reduces the generation of short-circuits between the conductive electrodes.

Abstract: The present invention provides a crystal oscillator piece in which the cross section of its vibrating tine, while not symmetrical in shape, has a principal axis that is oriented parallel to an X axis to suppress the generation of leakage vibration, and a method for manufacturing such a crystal oscillator piece.

Abstract: An object of the present invention is to provide a crystal oscillator piece in which the generation of leakage vibration is suppressed, and a method for manufacturing such a crystal oscillator piece.

Abstract: The invention is directed to the provision of a method for manufacturing a crystal oscillator manufacturing method that can achieve a highly precise fine adjustment without applying unnecessary external force to a crystal oscillator, and that can adjust a plurality of crystal oscillators in a collective manner. More specifically, the invention provides a method for manufacturing a crystal oscillator includes a first etching step for forming a prescribed external shape, an electrode forming step for forming an electrode at least in a portion of a surface of the external shape, a leakage amount measuring step for measuring leakage amount associated with leakage vibration of the external shape, and a second etching step for etching the external shape by an amount that is determined based on a measurement result of the leakage amount measuring step so as to adjust balance.

Abstract: A piezoelectric device has a piezoelectric vibration element mounted in a package wherein the piezoelectric vibration element comprises two stick-like vibration legs; a central leg provided between the two vibration legs; a coupling portion that couples one end of each of the two vibration legs and one end of the central leg; and a protrusion portion that is coupled to another end of the central leg, has a predetermined angle, neither 0 nor 180 degrees, to the length direction of the central leg, and extends into a direction not interfering with the driving legs. In making the piezoelectric device smaller and thinner, this configuration avoids interference between a support point on the central leg, provided for supporting the vibration element, and conductive electrodes, improves insulation between the conductive electrodes, and reduces the generation of short-circuits between the conductive electrodes.

Abstract: The present invention provides a crystal oscillator piece in which the cross section of its vibrating tine, while not symmetrical in shape, has a principal axis that is oriented parallel to an X axis to suppress the generation of leakage vibration, and a method for manufacturing such a crystal oscillator piece.

Abstract: An object of the present invention is to provide a crystal oscillator piece in which the generation of leakage vibration is suppressed, and a method for manufacturing such a crystal oscillator piece.