Method of polarizing piezoelectric ceramic substrate

Details Method of polarizing piezoelectric ceramic substrate Method of polarizing piezoelectric ceramic substrate

1994-12-28

1996-08-06

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Producing or treating inorganic material, not as pigments,...

264 401, B28B 1100

Patent

active

055431062

ABSTRACT:
A plurality of polarization electrodes are provided oppositely on front and back surfaces of a piezoelectric ceramic substrate, while the polarization electrodes on the front surface and the polarization electrodes on the back surface are connected respectively by connecting electrodes which are formed on positions not opposed to each other. A dc voltage is applied across the polarization electrodes on the front and back surfaces for polarizing the substrate to form a plurality of polarized portions in the substrate. Thus, it is possible to reduce stress concentration in polarizing process, thereby inhibiting the substrate from cracking.

REFERENCES:
patent: 5310511 (1994-05-01), Marcus
patent: 5444326 (1995-08-01), Yoshida

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