LAMINATED PIEZOELECTRIC FILM FOR PIEZOELECTRIC LOUDSPEAKER AND METHOD OF MANUFACTURING THE SAME

摘要

Disclosed are a laminated piezoelectric ceramic film for a piezoelectric speaker which is capable of easily performing welding between a ceramic polymer complex layer and a conductive polymer electrode layer when ceramic polymer complex layers and conductive polymer electrode layers are alternately laminated, and of minimizing defects or delamination which may be changed according to the contact surface property; and a method for manufacturing the same. The laminated piezoelectric ceramic film for a piezoelectric speaker according to the present invention includes at least two films which are laminated, wherein each of the films includes a ceramic polymer complex layer formed with piezoelectric ceramic and first polymer binder; and a conductive polymer electrode layer formed with a conductive material and second polymer binder, wherein the conductive polymer electrode layer includes at least two layers, and the conductive polymer electrode layers and the ceramic polymer complex layer are alternately laminated. Therefore, the first and second polymer binders are formed with the same material, so that the welding between the ceramic polymer complex layer and the conductive polymer electrode layer may be easily performed.