Patent ID: 8723400

Claim:
A piezoelectric resonator device in which excitation electrodes of a piezoelectric resonator plate are hermetically sealed, a plurality of sealing members that hermetically seal the excitation electrodes of the piezoelectric resonator plate, the plurality of sealing members each having a bonding layer, and at least one of the plurality of sealing members being provided with a bank portion and having the bonding layer formed on a top face of the bank portion, wherein the plurality of sealing members are bonded together with the bonding layers of the sealing members to form a bonding material containing an intermetallic compound, the bonding layers comprise a first bonding layer and a second bonding layer opposed to each other, the bonding material is sandwiched between the first bonding layer and the second bonding layer, the intermetallic compound is biasedly positioned within the bonding material in such a manner as to be continuously present from a first end face of the bonding material contacting the first bonding layer to a second end face of the bonding material contacting the second bonding layer, the bonding material further comprises a substance other than the intermetallic compound, and the other substance is provided to surround the intermetallic compound.