Patent ID: 6492762
Filing Date: 2002-12-10
Classification: B06B,G10K,H01L,Y10S

Abstract:
A multi-layer piezoelectric transducer, comprising:a first polymeric layer of piezoelectric material having spaced apart first and second surfaces; a second polymeric layer of piezoelectric material having spaced apart first and second surfaces; a first ground layer overlying the first surface of the first polymeric layer; a second ground layer overlying the first surface of the second polymeric layer; and a signal layer sandwiched between the second surfaces of the first and second polymeric layers, the signal layer comprising a plurality of separated signal electrodes forming a signal layer array, each signal electrode being capable of separate excitation, wherein at least one of the first and second polymeric layers comprises a plurality of separate polymeric piezoelectric segments forming an array in substantial alignment with the signal layer array.