Patent ID: 6012207
Filing Date: 2000-01-11
Classification: H01L,Y10T

Abstract:
A method of making a transformer comprising the steps of:forming a piezoelectric member including a driving section and a power-generating section and at least two polarization electrodes exposed at least in part on a surface of the piezoelectric member and spaced from each other along a length of the piezoelectric member so as to define at least three portions within the power-generating section including a first portion located between the driving section and a first one of the at least two polarization electrodes, at least one second portion located between the at least two polarization electrodes. and a third portion located between a second one of the at least two polarization electrodes and an end of the power-generating section;polarizing the driving section in a first direction;polarizing the power-generating section in a second direction which is different from the first direction; andpolarizing the first portion to have a degree of polarization which is less than a degree of polarization of the at least one second portion and polarizing the at least one second portion to have a degree of polarization which is less than a degree of polarization of the third portion.