PIEZOELECTRIC ACTUATOR STRUCTURE OF PIEZOELECTRIC CERAMICS HAVING LAMINATED CERAMIC ACTUATING LAYER AND FABRICATION METHOD THEREOF

摘要

Disclosed is a laminated ceramic actuator structure made of piezoelectric ceramics having a laminated ceramic actuation layer and a fabrication method thereof. The piezoelectric actuator structure comprises: a plurality of bar-shaped piezoelectric ceramics each having a first metal electrode coated on a top surface of a piezoelectric ceramic panel and a second metal electrode coated on a bottom surface of the piezoelectric ceramic panel, the first and second metal electrodes being coated to such extents that the top and bottom surfaces are partially exposed to form first and second etched portions, the piezoelectric ceramics being laminated one atop another to have alternating poling directions; and positive and negative sheet metal electrodes bonded to both ends of the laminated piezoelectric ceramics, wherein the piezoelectric ceramics are alternatively laminated.