Patent ID: 6552471
Filing Date: 2003-04-22
Classification: B06B,H01L,Y10T

Abstract:
A piezoelectric assembly for an ultrasonic transducer, the assembly comprising:a first piezo layer comprising a first substrate having a first conductive coating covering the perimeter of said first substrate, said first conductive coating having a first electrode and a second electrode electrically isolated from each other by first and second cuts in said first conductive coating; and a second piezo layer disposed adjacent to said first piezo layer, the second piezo layer comprising a second substrate having a second conductive coating covering the perimeter of said second substrate, said second conductive coating having a third electrode and a fourth electrode electrically isolated from each other by third and fourth cuts in said second conductive coating; and wherein said first and second piezo layers are affixed together with an adhesive such that said first electrode and said third electrode form a first electrical node and said second and fourth electrodes form a second electrical node, said first and second electrical nodes defining first and second capacitors across said first and second substrates such that the total impedance of said piezoelectric assembly is less than the impedance of said first piezo layer.