Patent ID: 6346764
Filing Date: 2002-02-12
Classification: H01L

Abstract:
A piezoelectric transformer, comprising:a transformer input portion, said transformer input portion comprising; a first input layer of electroactive ceramic having first and second opposing major faces; a first input electrode bonded to said first major face of said first input layer; and a second input electrode bonded to said second major face of said first input layer; a transformer output portion, said transformer output portion comprising; a first output layer of electroactive ceramic having first and second opposing major faces, and first and second nonparallel bisectors; a first intermediate electrode bonded to and substantially covering said first major face of said first output layer on a first side of said first bisector; a second intermediate electrode bonded to and substantially covering said first major face of said first output layer on a second side of said first bisector; said first and second intermediate electrodes being electrically isolated from each other on said first major face of said first output layer; a first output electrode bonded to and substantially covering said second major face of said first output layer on a first side of said second bisector; a second output electrode bonded to and substantially covering said second major face of said first output layer on a second side of said second bisector and on a first side of said first bisector; and a third output electrode bonded to and substantially covering said second major face of said first output layer on said second side of said second bisector and on a second side of said first bisector; said first, second and third output electrodes being electrically isolated from each other on said second major face of said first output layer; and an isolation layer having first and second opposing major faces; said first major face of said isolation layer being bonded to said first or second opposing major face of said first input layer; said second major face of said isolation layer being bonded to said first or second opposing major face of said first output layer.