PIEZOACTUATOR WITH LOW STRAY CAPACITANCE

摘要

The invention relates to a piezoactuator with a stack (1) of superimposed piezoceramic layers (3), with inner electrodes (2), arranged between the piezoceramic layers (3), whereby at least a boundary region (4) of the stack (1) is free from inner electrodes (21, 22) and a cover layer (51, 52) is arranged in the boundary region (4), the dielectric constant of which is less than the dielectric constant of a piezoceramic layer (3).