Piezoelectric transducer made from a polymer material and process for manufacturing same
First Claim
1. In a piezoelectric transducer whose active element is formed by a polymer film forming a self-supporting structure provided with electrodes on both its faces, the part of the film between said electrodes contains at least one non-developable zone mechanically relaxed and caused to change from a non-polar to a polar phase by an electric field applied thereto;
- said electric filed inducing in said polymer film a macromolecular chain transition between reversed and non-reversed neighboring chains.
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Accused Products
Abstract
Piezoelectric and pyroelectric transducers whose active element is formed by a polymer film. The transducer is manufactured from a flat polymer film by stretching this film over a mold so as to give it a self-supporting form and electroforming the stretched film by means of a corona discharge so as to induce in the polymer film a macromolecular chain translation between reversed and non-reversed neighboring chains.
12 Citations
4 Claims
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1. In a piezoelectric transducer whose active element is formed by a polymer film forming a self-supporting structure provided with electrodes on both its faces, the part of the film between said electrodes contains at least one non-developable zone mechanically relaxed and caused to change from a non-polar to a polar phase by an electric field applied thereto;
- said electric filed inducing in said polymer film a macromolecular chain transition between reversed and non-reversed neighboring chains.
- View Dependent Claims (2, 3, 4)
Specification