Patent ID: 9354128
Filing Date: 2016-05-31
CPC Classification: G01L,H03H

Claim Text:
1. A resonator element comprising: a base that includes a first end portion and a second end portion disposed opposite to the first end portion in a planar view; and a pair of vibrating arms that extends from the first end portion in a first direction and is arranged in a second direction intersecting with the first direction in the planar view, wherein a protruding portion is provided in at least one end portion between a third end portion and a fourth end portion that are respectively disposed at opposite ends of the base in the second direction in the planar view, and wherein when a shortest distance between the first end portion and the second end portion is Wb [m], an effective width of the base in the first direction is We [m], and a Q value of the resonator element is Q, the following expressions (A) and (B) are satisfied: where in expression (A), f represents a vibration frequency [Hz] of the resonator element, ρ is mass density [kg/m