Patent ID: 7681291

Claim:
A method for manufacturing a piezoelectric resonator comprising: preparing a resonator substrate member, a base substrate member and a lid substrate member; forming a plurality of resonator elements and a penetrating hole corresponding to each of the resonator elements on the resonator substrate member; forming a first excitation electrode on at least a part of the resonator element on one main surface of the resonator substrate member, forming a second excitation electrode on at least a part of the resonator element on the other main surface of the resonator substrate member, forming a third electrode on at least a part of the other main surface, and forming an electrode connected the first and the third electrode on at least of the internal surface of the penetrating hole; forming a plurality of holes each corresponding to the resonator element on the base substrate member; bonding the lid substrate member to the one main surface of the resonator substrate member, and bonding the base substrate member to the other main surface of the resonator substrate member such that the resonator element corresponds to the holes of the base substrate member; and cutting the lid substrate member, the resonator substrate member and the base substrate member so as to leave a part of the internal surface of the penetrating hole.