Patent ID: 7221077
Filing Date: 2007-05-22
Classification: B06B

Abstract:
1. A cylindrical ultrasonic transducer comprising: an acoustic matching layer including at least a layer made up of a hard material; a piezoelectric member which is provided with electrodes on both plane portions and which is fixed and disposed on a face of the layer made up of the hard material and positioned to allow the acoustic matching layer to protrude in a longitudinal axial direction as compared with the piezoelectric member; and a substrate of which at least one face side is formed with an electroconductive pattern and which is fixed and disposed on the face of the layer made up of a hard material; wherein, with such a disposed state, the piezoelectric member and the substrate are divided into substrates on which a plurality of piezoelectric devices and a predetermined electroconductive pattern are disposed to array the plurality of piezoelectric devices; and wherein the electroconductive pattern of the substrate, and at least part of the electrodes of the piezoelectric member which is electrically connected to at least part of this electroconductive pattern are directed in the same direction, this substrate is disposed adjacent to the piezoelectric member, and the electroconductive pattern on the substrate and the electrodes of the piezoelectric member, which are divided, are electrically connected via an electroconductive member respectively.