Title:
PIEZOELECTRIC TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2018/037858
Kind Code:
A1
Abstract:
A piezoelectric transformer includes a vibration portion assembly portion (9). The vibration portion assembly portion (9) includes an output electrode (2), an output-side intermediate electrode (41), an input-side intermediate electrode (42), and an input electrode (6). The vibration portion assembly portion (9) includes n vibration portions. The input electrode (6) includes one or more and not more than n input electrode pieces. The output electrode (2) includes one or more and not more than n output electrode pieces. Wiring is arranged such that voltages of opposite phases can be applied to a first input electrode piece group which is a set of one or more of the input electrode pieces corresponding to odd-numbered vibration portions, and to a second input electrode piece group which is a set of one or more of the input electrode pieces corresponding to even-numbered vibration portions. The second output electrode pieces and the first output-side intermediate electrode pieces overlap each other in a thickness direction. The first output electrode pieces overlap neither the first nor the second output-side intermediate electrode pieces in the thickness direction.
Inventors:
IKEUCHI SHINSUKE (JP)
MOCHIDA YOICHI (JP)
YAMAMOTO KANSHO (JP)
HADA TAKUO (JP)
HORIUCHI HIDEYA (JP)
MOCHIDA YOICHI (JP)
YAMAMOTO KANSHO (JP)
HADA TAKUO (JP)
HORIUCHI HIDEYA (JP)
Application Number:
PCT/JP2017/027977
Publication Date:
March 01, 2018
Filing Date:
August 02, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01L41/107; B06B1/06; H01L41/047; H01L41/257; H02N2/18
Domestic Patent References:
| WO2014097681A1 | 2014-06-26 |
Foreign References:
| JPH027584A | 1990-01-11 | |||
| JP2010156704A | 2010-07-15 | |||
| JP2009225503A | 2009-10-01 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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