Patent ID: 6037706
Filing Date: 2000-03-14
Classification: H01L

Abstract:
A piezoelectric transformer comprising:a generator piezoelectric ceramic plate having a rectangular shape, and divided in the longitudinal direction into six substantially equal portions from a first to a sixth region, five band-like electrodes being formed at the five positions of the borders between said regions, and said second to fifth regions being polarized in the longitudinal direction; andfour driver piezoelectric ceramic plates formed substantially as wide as, and substantially one-third as long as said generator piezoelectric ceramic plate, having input internal electrodes formed on the surface confronting said generator piezoelectric ceramic plate and input electrodes formed on the surface of the side opposite said generator piezoelectric ceramic plate, and which are polarized in the direction of thickness between said input electrodes and input internal electrodes, with one driver piezoelectric ceramic plate on the upper surface of the first and second regions, one on the lower surface of the first and second regions, one on the upper surface of the fifth and sixth regions, and one on the lower surface of the fifth and sixth regions of said generator piezoelectric ceramic plate, each with an interposed insulating plate.