| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piezoelectric transducer which improves energy confinability, in a direction perpendicular to a polarization direction and which obtains a high Q value. <P>SOLUTION: Electrodes 1, 2 for vibration are provided on both main surfaces 31, 32 of a piezoelectric substrate 3 in the thickness direction Z. The piezoelectric substrate 3 is polarized to Px in the lengthwise direction X, crossing perpendicular with respect to the thickness direction Z. The piezoelectric substrate 3 has grooves 41 to 44, extending in parallel with the polarization direction X along the side section of the electrodes 1, 2 for vibration in the widthwise direction Y. <P>COPYRIGHT: (C)2007,JPO&INPIT |
