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

FIELD: electric elements.

SUBSTANCE: invention can be used in micromechanics, controlled optics, sensor equipment, acoustics, in particular in the manufacture of piezoelectric acoustic elements – sensors and emitters. According to the proposed method, a composite tape is formed , which includes piezoelectric layers with non-electroded surfaces, then, the composite tape is rolled into a roll using electroconductive adhesive interlayers between the contacting layers of the composite tape and the roll turns, and an electroconductive adhesive coating is additionally applied on the outer cylindrical surface of the roll. At the same time in the plane of the cross section of the roll the electroconductive interlayers and the electroconductive coating on the external cylindrical surface of the roll have the form of a double-start spiral of electrodes with outputs for connection to the spiral of electrodes of the control electric voltage.

EFFECT: higher efficiency of piezoelectric actuator.

2 cl, 2 dwg