RESONATOR, OSCILLATOR, ELECTRONIC APPARATUS, AND MOVING OBJECT

摘要

A resonator includes a resonator element, which includes a quartz crystal substrate formed of crystal, and a package in which the resonator element is housed. The quartz crystal substrate includes a base portion and two vibrating arms that are aligned in the X-axis direction of the crystal and extend from the base portion in the +Y′-axis direction (or the −Y′-axis direction) of the quartz crystal. The principal surface of the base portion on the −Z′-axis side (+Z′-axis side when the vibrating arms extend in the −Y′-axis direction) in the quartz crystal is fixed to the package.

主权项

1. A resonator, comprising:
a resonator element including a vibrating body formed of crystal; and a package in which the resonator element is housed, wherein, in a Cartesian coordinate system having an X axis as an electrical axis, a Y axis as a mechanical axis, and a Z axis as an optical axis of the quartz crystal, assuming that an axis obtained by inclining the Z axis so that a +Z side rotates in a −Y direction of the Y axis with the X axis as a rotation axis is a Z′ axis and an axis obtained by inclining the Y axis so that a +Y side rotates in a +Z direction of the Z axis with the X axis as a rotation axis is a Y′ axis, the vibrating body includes a base portion and two vibrating arms that are aligned along the X-axis direction and extend along the Y′ axis from the base portion in plan view, a principal surface of the base portion crossing the Z′ axis is fixed to the package, and a polarity of the Y′ axis in the extending direction of the vibrating arms is different from a polarity of the Z′ axis that is in a direction in which the principal surface fixed to the package faces.