Patent ID: 6924587
Filing Date: 2005-08-02
Classification: A61B,B06B,G01N

Abstract:
1. A piezoelectric transducer comprising: a substrate having first substrate electrodes and second substrate electrodes defining input and output terminals of the piezoelectric transducer; a piezoelectric element on the substrate for transmitting an ultrasonic wave to an object to be measured so that the object reflects the wave; another piezoelectric element positioned on the substrate to receive the reflected wave from the object; a first surface electrode provided on each of the piezoelectric elements and connected to a respective first substrate electrode; a second surface electrode provided on each of the piezoelectric elements; conductive members each having one end connected to a respective one of the second substrate electrodes and having another end connected to a respective one of the second surface electrodes; and an acoustic matching layer provided on the substrate and disposed over and completely covering the piezoelectric elements and the conductive members for efficiently propagating the ultrasonic wave to and from the object, the piezoelectric elements and the conductive members being completely embedded in the acoustic matching layer with no portion of the piezoelectric elements and the conductive members exposed.