Piezoelectric switch

Details Piezoelectric switch Piezoelectric switch

1999-06-18

2000-08-15

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310331, H01L 4108

Patent

active

06104119&

ABSTRACT:
A piezoelectric switch (10) is made by laminating one piezoelectric film (16) on the top and a second piezoelectric film (18) on the bottom sides of a stiff central core (14). The central core has one or more actuation areas or poppels (12) formed therein. Each piezoelectric film has an electrically conductive portion (15, 17) formed directly over the actuating area. When the actuating area on the laminate is depressed (11), the piezoelectric films each generate an electric signal that is sent through the electrically conductive portions, thus creating a switching signal.

REFERENCES:
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patent: 4383195 (1983-05-01), Kolm et al.
patent: 4598592 (1986-07-01), McMaster
patent: 4612472 (1986-09-01), Kakizaki et al.
patent: 5280751 (1994-01-01), Muirhead et al.
patent: 5760530 (1998-06-01), Kolesar
patent: 5861702 (1999-01-01), Bishop et al.
patent: 5874892 (1999-02-01), Antonellis et al.
patent: 5883575 (1999-03-01), Ruby et al.
patent: 5923318 (1999-02-01), Zhai et al.
Definition of Piezo Film Polarity, Application Note 65773 Feb. 1, 1994 Rev. B, AMP, Inc. Valley Forge, PA.

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