发明名称 |
LAMINATED PIEZOELECTRIC TRANSDUCER |
摘要 |
<p>A laminated piezoelectric transformer according to the present invention comprises (a) a laminated body formed by laminating a plurality of ceramic layers and a plurality of internal electrodes and (b) a plurality of external electrodes electrically connected with the internal electrodes and disposed on the surface of the laminated body. Further, the internal electrodes of the laminated piezoelectric transformer of the invention are characterized by having a plurality of primary internal electrodes positioned at the middle portion along the longitudinal direction of the laminated body and a plurality of secondary internal electrodes positioned at both end portions of the laminated body. By virtue of this configuration of the invention, the polarization volume on the secondary side can be enlarged and, therefore, the laminated piezoelectric transformer of the invention can step up voltages at high energy conversion efficiency. <IMAGE></p> |
申请公布号 |
EP1107326(A1) |
申请公布日期 |
2001.06.13 |
申请号 |
EP20000925605 |
申请日期 |
2000.05.11 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
OKUDA, KAZUHIRO;GOTO, YASUSHI;MINAMI, SEIICHI;YAMAGUCHI, TOMOKAZU;KAWAMURA, SATOSHI;KAWANO, KUNITOSHI;FUKUSHIMA, HIROSHI |
分类号 |
H01L41/047;H01L41/083;H01L41/107;(IPC1-7):H01L41/107 |
主分类号 |
H01L41/047 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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