Multilayer piezoelectric element

Details Multilayer piezoelectric element Multilayer piezoelectric element

1994-04-26

1995-04-11

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310364, 310328, H01L 4108

Patent

active

054061644

ABSTRACT:
Disclosed is a multilayer piezoelectric element in which the conductive layers, each having a first layer including conductive particles and a second insulating layer, 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 conductive layer based on the conductive particles 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 that a plurality of the piezoelectric plates and the internal electrodes are alternately stacked and the conductive layers, each having a first layer including conductive particles and a second insulating layer, are formed over both side surfaces and further the conductive portions are partially formed in the 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: 4523121 (1985-06-01), Takahashi et al.
patent: 4803763 (1989-02-01), Eturo et al.
patent: 5113566 (1992-05-01), Weekamp et al.
patent: 5251094 (1993-10-01), Amano et al.
patent: 5254212 (1993-10-01), Someji et al.
patent: 5339068 (1994-08-01), Tsunoda et al.

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