| 摘要 |
A piezoelectric transformer includes a plate-shaped piezoelectric member having a driving section located at a first portion of the piezoelectric member including a first end and a power-generating section located at a second portion of the piezoelectric member including a second end. The driving section is made by repeatedly and alternately laminating a driving electrode and a portion of the piezoelectric member which is polarized in the thickness direction. The power-generating section includes a power-generating electrode and a portion of the piezoelectric member which is polarized in the longitudinal direction. In the piezoelectric transformer, at least one of the driving section and the power-generating section has an area which is near a boundary between the driving section and the power-generating section which has a lower degree of polarization than the degree of polarization in areas spaced away from the boundary between the driving section and the power-generating section. |
