Metal working – Piezoelectric device making
Patent
1998-11-09
2000-01-11
Young, Lee
Metal working
Piezoelectric device making
310359, 310366, H04R 1700
Patent
active
060122072
ABSTRACT:
A piezoelectric transformer has a plate shaped piezoelectric member including a driving section disposed at one portion of the piezoelectric member including one end thereof and a power-generating section at the other portion of the piezoelectric member including the other end thereof. The driving section includes driving electrodes and a portion of the piezoelectric member which is polarized in the thickness direction. The power-generating section includes a power-generating electrode and a portion of the piezoelectric member polarized in the longitudinal direction. At least one polarization electrode which is exposed in part on a surface of the piezoelectric member is provided between the driving section and the power-generating electrode. The degree of polarization in a portion of the power generating section located between the driving section and the at least one polarization electrode is lower than the degree of polarization in a portion of the power generating section located between the power-generating electrode and the at least one polarization electrode.
REFERENCES:
patent: 3549913 (1970-12-01), Moriki et al.
patent: 5440195 (1995-08-01), Ohnishi et al.
patent: 5814922 (1998-09-01), Uchino et al.
patent: 5818150 (1998-10-01), Yamamoto et al.
Ando Akira
Ogiso Koji
Caputo Davide
Murata Manufacturing Co. Ltd.
Young Lee
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