Patent ID: 6735839
Filing Date: 2004-05-18
Classification: H01L,H03H,Y10T

Abstract:
A method of manufacturing a piezoelectric actuator comprising the steps of:printing an internal electrode and a dummy electrode on each of a plurality of green sheets such that the internal electrode extends from one side of each of the plurality of green sheets and such that the dummy electrode extends from the other side of each of the plurality of green sheets; stacking the plurality of green sheets to obtain a layered product such that the internal electrodes alternately extend from first and second sides of the layered product; firing the layered product to obtain a sintered ceramic compact body; respectively forming first and second external electrodes on the first and second sides of the sintered ceramic compact body; and applying a DC electric field between the first and second external electrodes to polarize the sintered ceramic compact body to make sintered ceramic compact body piezoelectrically active.