Patent ID: 8362676

Claim:
A piezoelectric device, comprising: a piezoelectric frame including a piezoelectric vibrating piece having first and second main surfaces and a respective excitation electrode on each of the first and second main surfaces, and including an outer frame surrounding the piezoelectric vibrating piece; a package base having an inner and an outer main surface, the outer main surface including at least one external electrode, and the inner main surface being bonded to the second main surface of the piezoelectric frame; a package lid having an inner and an outer main surface, the inner main surface being bonded to the first main surface of the piezoelectric frame; a sealing material disposed peripherally relative to the outer frame so as to be peripherally arranged relative to each of the first and second main surfaces of the piezoelectric frame, the sealing material thus bonding the piezoelectric frame to the package lid and to the package base to form a package defining a package cavity containing the piezoelectric vibrating piece; and at least one communicating groove extending from the cavity and defined in at least one of the first and second main surfaces of the outer frame, the inner main surface of the package base, and the inner main surface of the package lid, the at least one communicating groove being sealed with the sealing material.