| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ultrasonic probe in which plural inorganic piezoelectric elements and plural organic piezoelectric elements are stacked to be formed capable of generating an ultrasonic image of high picture quality. <P>SOLUTION: On a surface of a backing material 1, plural inorganic piezoelectric elements 2 having pitches P1 are arrayed to be formed, on plural inorganic piezoelectric elements 2, an acoustic matching layer 3 is extended over whole of the plural inorganic piezoelectric elements 2, and plural organic piezoelectric elements 4 having pitches P2 are arrayed to be formed on the acoustic matching layer 3. The plural organic piezoelectric elements 4 comprise: plural signal electrode layers 42 which contacts a surface of the acoustic matching layer 3; a common organic piezoelectric substance 41 joined onto the plural signal electrode layers 42 and extended over the plural organic piezoelectric elements 4; and a common ground electrode layer 43 joined onto the organic piezoelectric substance 41 and extended over the plural organic piezoelectric elements 4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
