Process for manufacturing a piezoelectric component
AssigneeThomson-CSF
InventorsThierry Feral, Bernard Fromont, Ronan Stephan, Eric Sernit, Olivier Lacour
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AssigneeThomson-CSF
InventorsThierry Feral, Bernard Fromont, Ronan Stephan, Eric Sernit, Olivier Lacour
Estimating the term…
The invention relates to a process for manufacturing a piezoelectric component and to the component resulting from such a process. According to the invention, the manufacturing process comprises the stacking of at least one piezoelectric element (1) and of at least two metallic electrodes (2), each piezoelectric element (1) being inserted between two metallic electrodes (2), characterized in that each piezoelectric element and each metallic electrode is produced, respectively, by coiling a piezoelectric film and by coiling a metallized film.
Process for manufacturing a piezoelectric;
Piezoelectric component of the stacked type consisting of the stack of piezoelectric elements and metallic electrodes, two successive metallic electrodes flanking a piezoelectric element, characterized in that each piezoelectric element consists of the stack of p sheets of polyvinylidene fluoride (PVDF) or of copolymer consisting of the said polyfluoride and of trifluoroethylene, p being an integer greater than or equal to 1, the said stack of p sheets being formed by coiling the same piezoelectric film with a number of turns equal to p and in that each metallic electrode consists of the stack of q metallic sheets, q being an integer greater than or equal to 1, the said stack of q metallic sheets being produced by coiling the same metallic film with the number of turns equal to q, each metallic electrode having an overhang (d) with respect to the piezoelectric element that adjoins it, the overhangs (d) of two metallic electrodes hugging the same piezoelectric element being located on opposite sides wherein said piezoelectric component further comprises metallic plates on the side faces of said stack of piezoelectric elements and of metallic electrodes and wherein said metallic sheets consist of a dielectric sheet covered with a metallization on at least one of its faces, each metallization having a non-metallized margin.
Dependencies are inferred from the claim text.