Piezoelectric device

Details Piezoelectric device Piezoelectric device

2006-12-20

2008-10-14

Schuberg, Darren (Department: 2834)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S186000, C333S190000, C310S348000

Reexamination Certificate

active

07436272

ABSTRACT:
A pizoelectric filter capable of improving the shielding property and increasing the heat releasing property is provided. The piezoelectric device includes a cover and piezoelectric device chips which are stacked and sealed together. The piezoelectric device also includes first external electrodes exposed at an upper surface of the cover and a grounded second external electrode exposed at the upper surface and a side surface of the cover. Electroconductive bonding materials are disposed between the cover and the piezoelectric device chips and all around an outer edge which connects the cover to the piezoelectric device chips so as to form a seal. The electroconductive bonding materials are also connected to the grounded second external electrode.

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International Search Report from corresponding International application dated Aug. 23, 2005.
The Written Opinion from corresponding International application dated Aug. 23, 2005.

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