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    • 6. 发明授权
    • 압전변압기제조방법
    • KR100300583B1
    • 2001-10-27
    • KR1019970080174
    • 1997-12-31
    • 엘지이노텍 주식회사
    • 남호팔박두원
    • H01L41/297H01L41/293
    • PURPOSE: A method for manufacturing a piezoelectric transformer is provided to provide a facility of a manufacturing process and to fix stably the completed piezoelectric transformer to a substrate by forming a hole for connecting an even number layer and an odd number layer of an inner electrodes to an outer circuit. CONSTITUTION: A green sheets(400) of a first piezoelectric element and a second piezoelectric element are stacked in alternatively by dividing an even number layer and an odd number layer, wherein the green sheet of a second piezoelectric element is stacked in a left end(401) of a driving portion and the green sheet of a second piezoelectric element uncoated with the inner electrode which is stacked in a right end(403) of the driving portion. A piezoelectric transformer element assembly(420) is formed by forming a vacuum hole(410) in a left side and a right side of the green sheet of the stacked piezoelectric transformer so that the each inner electrodes are correspond to the uncoated left end and the right regions. The piezoelectric transformer element assembly is coated with an outer electrode on a top and a bottom side(430,431) thereof, and an outer electrode material is coated on an inner wall of the vacuum hole by sucking an outer electrode materials into the vacuum hole using a vacuum apparatus(450), simultaneously and then dried, thereby the even number layers are connected electrically each other and the odd number layers are connected electrically each other. A cross section side of the oscillating portion of the piezoelectric transformer element assembly is coated with the outer electrode and the resultant structure is baked.