Patent ID: 6172447
Filing Date: 2001-01-09
Classification: H01L

Abstract:
A piezoelectric transformer device having a first region polarized in a thickness direction and having primary electrodes formed therein, a second region polarized in a longitudinal direction and having secondary electrodes formed therein, and a plurality of piezoelectric members stacked on each other, comprising:a plurality of first inner electrodes arranged as said primary electrodes between said plurality of piezoelectric members and included in said first region;a plurality of second inner electrodes arranged as said secondary electrodes between said plurality of piezoelectric members and included in said second region;first outer electrodes formed on a surface of said piezoelectric transformer device to apply a voltage to said plurality of first inner electrodes; anda second outer electrode formed on the same surface of said piezoelectric transformer device to extract a voltage generated in said piezoelectric transformer device upon application of the voltage through said plurality of second inner electrodes,wherein said plurality of first inner electrodes are alternately connected to each other through at least two first columnar conductors included in said first region, thereby constituting two inner electrode groups, andsaid plurality of second inner electrodes are connected to each other in the form of a mesh through a plurality of second columnar conductors included in said second region.