| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reliable piezoelectric element. <P>SOLUTION: A piezoelectric element 1 comprises a piezoelectric body 2, one electrode 3 provided on a part of the piezoelectric body 2, and another electrode 4 provided on another part of the piezoelectric body 2, and the electrode 3 has weaker magnetism than the other electrode 4 or no magnetism. According to this piezoelectric element 1, for example, a magnet is held up, and when it has been determined that an electrode side stuck to the magnet is a side having a prescribed polarity, the polarity direction of the piezoelectric element 1 can be easily found without forming a recognition pattern at an electrode; thereby, making a mistake in the direction on the implementation of the piezoelectric element 1 can be prevented. <P>COPYRIGHT: (C)2013,JPO&INPIT |
