Resonator element, resonator, oscillator, electronic device, and moving object

摘要

A resonator element is provided. A base portion includes a first base portion, a second base portion, and a connecting portion. The base portion includes a width-decreasing portion that is provided at an end of the connecting portion on the first base portion side and that has a width along an X-axis direction which continuously decreases toward the second base portion. An outer edge of the width-decreasing portion and an outer edge of the connecting portion form a continuous line that does not include a corner portion, when seen in a plan view. When an angle between a tangent of a portion of the curved line on the first base portion side and a segment parallel to the X-axis direction is set to θ, a relation of 0°<θ<90° is satisfied.

主权项

1. A resonator element comprising:
a base portion; and a pair of vibrating arms that extend from one end of the base portion along a first direction and are arranged in a line extending in a second direction perpendicular to the first direction, the base portion including, a first base portion that includes the one end, a second base portion that is provided on an opposite side of the first base portion from the one end side when seen in a plan view, and a connecting portion that connects the first base portion and the second base portion, the base portion being provided with a notch portion that is aligned with the connecting portion along the second direction, the notch portion having a width which increases along the first direction, in a principal surface of the base portion, the notch portion is provided with (i) one end-side outer edge on the one end-side, and (ii) the other end-side outer edge on the other end side, which is the opposite side to the one end-side, and the one end-side outer edge and the other end-side outer edge are asymmetrical to each other, the one end-side outer edge is a line, which includes a straight line and a curved line and does not include a corner portion, and when an angle between the straight line of the one end-side of the outer edge and a virtual line passing through the notch portion along the second direction is θ, a relation of 0°<θ<90° is satisfied.