Nihon Dempa Kogyo Co., Ltd.

Kenji Kamezawa

Ryoichi Ichikawa

Yoshiaki Amano

Mitoshi Umeki

Kenichi Kikuchi

Noritsugu Matsukura

An exemplary piezoelectric vibrating device includes a piezoelectric vibrating piece that vibrates when electrically energized. A first package plate has a main recess in which the piezoelectric vibrating piece is placed, and a peripheral surface surrounding the recess. A second package plate is bonded to the peripheral surface of the first package plate in airtight manner. A band of adhesive bonds the first package plate to the second package plate. The adhesive band surrounds the peripheral surface. Between the adhesive and the main recess is a band of metal film. The band of metal film prevents gas, generated from the adhesive, from flowing into the recess. The band of metal film surrounds the peripheral surface and is disposed inboard of the band of adhesive.

Piezoelectric vibrating devices and methods for manufacturing same

To provide a piezoelectric device prevented from overflowing of sealing materials. The piezoelectric device () stores a piezoelectric vibrating piece () having a pair of excitation electrodes. The piezoelectric device comprises: a package lid (), including a first bonding surface (M) formed in periphery of the package lid in a circumferential pattern and a lid recess (); a package base (), including a second bonding surface (M), a base recess surrounded by a second bonding surface that is higher than the second bonding surface, and a pair of seats that is protruding from the base recess, situated for mounting the piezoelectric piece; a piezoelectric piece mounted onto the pair of seats; and a non electric conductive sealing material () disposed peripherally in relative to the first bonding surface and the second bonding surface in a circumferential pattern, thus the adhesive bonding the first bonding surface and the second bonding surface. Furthermore, height of the second bonding surface and the pair of seats are same height.

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Saitama, Japan

Kenji Kamezawa