Ultrasonic probe

An ultrasonic probe comprising:

• a backing material;
• a piezoelectric unit disposed on said backing material;
• an acoustic matching layer disposed on said piezoelectric unit;
• a conductive film formed on a top surface of said backing material, said top surface being formed in a convex shape;
• an electrode formed on a top surface of said piezoelectric unit, said acoustic matching layer being bonded on said electrode;
• and
• a conductive adhesive applied to have a non-uniform thickness, said conductive adhesive intervening between said conductive film and a bottom surface of said piezoelectric unit, said conductive adhesive having a minimum thickness at a center of said piezoelectric unit in a longitudinal direction thereof and a maximum thickness at both ends of said piezoelectric unit in the longitudinal direction;
• wherein said piezoelectric unit is applied with a driving current through said conductive adhesive.

An ultrasonic probe comprising:

• a backing material;
• a piezoelectric unit disposed on said backing material;
• an acoustic matching layer disposed on said piezoelectric unit;
• a conductive film formed on a bottom surface of said acoustic matching layer, said bottom surface being formed in a convex shape;
• an electrode formed on a bottom surface of said piezoelectric unit, said piezoelectric unit being bonded on said backing layer;
• and
• a conductive adhesive applied to have a non-uniform thickness, said conductive adhesive intervening between said conductive film and a top surface of said piezoelectric unit, said conductive adhesive having a minimum thickness at a center of said piezoelectric unit in a longitudinal direction thereof and a maximum thickness at both ends of said piezoelectric unit in the longitudinal direction;
• wherein said piezoelectric unit is applied with a driving current through said conductive adhesive.