| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for manufacturing a piezoelectric resonance element having satisfactory resonance characteristic capable of suppressing unnecessary spurious easily without varying the outside dimension, without giving a damping material and without executing a complicated polarizing process. SOLUTION: In a piezoelectric body, the method for manufacturing the piezoelectric resonance element 4 applies voltage in the first direction to obtain saturation polarization and then, the method applies voltage in a direction opposite to the first direction to reduce polarizability to be <100% of saturation polarization, and forms plural resonance electrodes 2 and 3 on the external surface of the piezoelectric body 1.</p> |
