Multilayer piezoelectric element

Details Multilayer piezoelectric element Multilayer piezoelectric element

1994-03-14

1995-10-17

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310328, 310364, 310366, H01L 4108

Patent

active

054593719

ABSTRACT:
Disclosed is a multilayer piezoelectric element in which the anisotropic conductive layers are formed on two side surfaces, each surface opposing with each other, of the multilayer piezoelectric element that a plurality of the piezoelectric plates and the internal electrodes are alternately stacked and the conductive portions are alternately formed in the anisotropic conductive layer corresponding to the internal electrodes disposed on each side surface, thereby the internal electrodes and the external electrodes are electrically connected with each other on each side surface through the conductive portions. And further, it is disclosed a multilayer piezoelectric element in which the conductive protrusions are alternately formed by nickel plating at ends of the internal electrodes disposed on both two side surfaces of the multilayer piezoelectric element in which a plurality of the piezoelectric plates and the internal electrodes are alternately stacked and the anisotropic conductive layers are formed over both side surfaces and further the conductive portions are partially formed in the anisotropic conductive layers by selectively pressing thereof through the conductive protrusions, thereby the internal electrodes and the external electrodes are electrically connected with each other through the conductive protrusions and the conductive portions.

REFERENCES:
patent: 3743773 (1973-07-01), Sobel
patent: 4460842 (1984-07-01), Waanders et al.
patent: 4523121 (1985-06-01), Takahashi et al.
patent: 4523121 (1985-06-01), Takahashi et al.
patent: 4786837 (1988-11-01), Kalnin et al.
patent: 5118982 (1992-06-01), Inoue et al.
patent: 5153477 (1992-10-01), Jomura
patent: 5254212 (1993-10-01), Someji et al.
patent: 5306980 (1994-04-01), Montgomery
Japanese Laid-Open Patent Publication No. SHO 62-211974.
Japanese Laid-Open Patent Publication No. SHO 63-17354.

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