Piezoelectric resonator device

A piezoelectric resonator device, comprising:

• a piezoelectric resonator plate including a first excitation electrode formed on a first main surface of a substrate, and a second excitation electrode formed on a second main surface of the substrate, the second excitation electrode making a pair with the first excitation electrode;
• a first sealing member covering the first excitation electrode of the piezoelectric resonator plate;
• a second sealing member covering the second excitation electrode of the piezoelectric resonator plate;
• an internal space formed by bonding the first sealing member to the piezoelectric resonator plate and by bonding the second sealing member to the piezoelectric resonator plate, the internal space hermetically sealing a vibrating part including the first excitation electrode and the second excitation electrode of the piezoelectric resonator plate;
• and
• a first electrode formed on an outer surface of the first sealing member and a second electrode formed on an outer surface of the second sealing member opposite to surfaces to be bonded to the piezoelectric resonator plate, wherein
• the first electrode and the second electrode each comprise metal laminated films having a same film configuration and a same film thickness.