Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1994-07-01
1995-07-04
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310344, H03H 910, H01L 4108
Patent
active
054303451
ABSTRACT:
A piezoelectric device is made by placing a piezoelectric substrate having oscillation electrodes on its front side and back side in a recess of a case and by sealing the recess with a lid. In both end portions of the case, there are provided substrate supporting portions which protrude from the recess and adhesive depositing portions adjacent to the substrate supporting portions, and inner electrodes are formed so as to cover the end portions of the case including the substrate supporting portions and the adhesive depositing portions. When the piezoelectric substrate is placed in the case, spaces are made between the piezoelectric substrate and the case at the adhesive depositing portions. A conductive adhesive is coated on the end portions of the substrate and then comes into the spaces. Thus, the conductive adhesive comes to the back side of the piezoelectric substrate and fills the adhesive depositing portions. Consequently, the oscillation electrodes are electrically connected with the inner electrodes by the conductive adhesive.
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Dougherty Thomas M.
Murata Manufacturing Co. Ltd.
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