| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated piezoelectric transformer whose directional properties and design specifications can be discriminated easily, whose manufacturing man-hours can be reduced and which can be mounted easily. SOLUTION: A plurality of internal electrodes are formed, so as to face over nearly the whole interlayer face of a piezoelectric ceramic in the drive part A of a piezoelectric laminate 1. A mark electrode 5, which combines a graphic (symbol) 'square shape' with a numeral '9', is formed on the surface on the side of the drive part A of the piezoelectric ceramic in the uppermost layer. The mark electrode 5 is a mark, used to discriminate the directional properties and the design specifications of the piezoelectric laminate 1.
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