Patent ID: 6081979
Filing Date: 2000-07-04
Classification: H01L,Y10T

Abstract:
A method of making a piezoelectric ceramic-polymer composite comprising the steps ofpartially embedding a monolayer of sintered piezoelectric ceramic granules in a layer of pliable material,partially covering the partially embedded sintered piezoelectric ceramic granules with a layer of a fluid, curable polymer resin, so that each of the sintered piezoelectric ceramic granules has a lower portion embedded in the layer of pliable material, a middle portion embedded in the layer of curable polymer resin and an upper portion protruding above the layer of curable polymer resin,curing the fluid, curable polymer resin to form a solid polymer matrix,removing the layer of pliable material to expose the lower portions of the sintered piezoelectric ceramic granules,flattening the upper portions of the sintered piezoelectric ceramic granules to form top surfaces that are coplanar with one another and parallel to the plane of the polymer matrix and flattening the lower portions of the sintered piezoelectric ceramic granules to form bottom surfaces that are coplanar with one another and parallel to the plane of the polymer matrix.