Piezoelectric Resonator Device, and Bonding Structure of Piezoelectric Resonator Device and Circuit Board

摘要

A crystal resonator includes: a crystal resonator plate; a first sealing member that covers a first excitation electrode of the crystal resonator plate; and a second sealing member that covers a second excitation electrode of the crystal resonator plate and includes a first external electrode terminal and a second external electrode terminal to be bonded to a circuit board using a flowable conductive bonding material. The second sealing member includes a second through hole and a third through hole that pass through between a first main surface and a second main surface on which the first external electrode terminal and the second external electrode terminal are formed. The second through hole and the third through hole include: respective through electrodes for conduction between electrodes formed on the first main surface and the second main surface; and respective through parts.

主权项

1. 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, the second sealing member including external electrode terminals to be electrically connected to an external circuit board using a flowable conductive bonding material; and 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, wherein through holes of the second sealing member are formed so as to pass through between a first main surface and a second main surface of the second sealing member, and the external electrode terminals are formed on the second main surface of the second sealing member, and wherein the through holes of the second sealing member include: respective through electrodes for conduction between electrodes formed on the first main surface and the second main surface of the second sealing member; and respective through parts.