PIEZOELECTRIC ACTUATOR MANUFACTURING METHOD Russian patent published in 2025 - IPC H10N30/05 

FIELD: electricity.

SUBSTANCE: invention relates to methods of making devices based on piezoelectric materials and can be used to make piezoelectric actuators. Essence of the invention consists in the fact, that the composite tape of two tape-type piezoelectric layers is rolled into a roll, two continuous electrically conductive adhesive layers are placed between the piezoelectric layers, characterized in that when winding two tape-type piezoelectric layers into a roll, a polymeric electrically insulating cylindrical substrate of a given diameter is used, wherein before winding, adjacent to the cylindrical surface of the substrate, the central end sections: ends and/or sections of side surfaces near ends of these two tapes are connected using insulating adhesive along the whole width of tapes to one or two various sections of external cylindrical surface of substrate.

EFFECT: reduced thickness of piezoelectric layers during their winding into a roll, as well as prevention of direct electromechanical contact during winding of two piezoelectric layers into a roll.

4 cl, 3 dwg