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

摘要

A resonator element includes a base, a quartz crystal resonator blank which is integrally disposed with the base, and has a pair of vibrating arms which are disposed in parallel in an X axial direction, and extend from the base in a Y′ axial direction, the vibrating arms include arms, hammerheads which are positioned on tip end sides of the arms, and are longer than the arms in the X axial direction, a relationship of 0.033×T [μm]

主权项

1. A resonator element comprising:
a base; and a pair of vibrating arms that extend from the base in a first direction in a plan view and that are disposed in parallel in a second direction orthogonal to the first direction, each of the vibrating arms including (i) a weight portion at a terminal end of the vibrating arm, (ii) an arm section extending from the base to the weight portion, and (iii) a main surface facing a third direction orthogonal to the first and second directions and that is flat throughout the arm section and the weight portion, wherein: when a thickness of each of the vibrating arms is set to T, and a distance between the weight portions in the second direction is set to W4, the following relationship is satisfied:
0.033×T1.6≦W2/W1≦7.0.