Patent ID: 10122343

Abstract:
A resonator device includes a substrate, a resonator element including a base member having first and second surface, and a pair of excitation electrodes, and first and second bonding member. Defining center of the first and second bonding member as a first and second bonding center, a center of a resonating region as a resonating region center, and defining a distance between the first bonding center and the second bonding center as L1, a length of a perpendicular drawn from the resonating region center to an imaginary line connecting the first bonding center and the second bonding center to each other as L2, a linear expansion coefficient of the first metal layer, the second metal layer, and the base member as α1, α2, α3 respectively, and a length of the resonator element as L3, 0<L1/L2≤0.97, |(α2−α1)/α1|≤0.35, |(α3−α1)/α1|≤0.35, and L3≤1.5 mm are satisfied.