Piezoelectric transformer

Details Piezoelectric transformer Piezoelectric transformer

1997-06-11

2000-05-09

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 41047, H01L 41107, H02M 504

Patent

active

060608196

ABSTRACT:
A piezoelectric transformer includes strip form electrodes on opposing upper and lower surfaces of a piezoelectric ceramic plate formed by screen printing using a conductive paste. By using strip form electrodes, discharge of a driving portion during polarization, degradation of reliability of mechanical strength due to excessive stress in a power generating portion during polarization, and instability of transformer output due to breakage of the electrode is prevented.

REFERENCES:
patent: 3736446 (1973-05-01), Berlincourt et al.
patent: 5365141 (1994-11-01), Kawai et al.
patent: 5571092 (1996-11-01), Abe
patent: 5701049 (1997-12-01), Kaneyama et al.
patent: 5811913 (1998-10-01), Kawai
patent: 5818150 (1998-10-01), Yamamoto
patent: 5872419 (1999-02-01), Hall et al.
patent: 5903086 (1999-05-01), Ogiso et al.
Japanese Patent Office Action dated Mar. 2, 1999.
Translation of portions of Japanese Patent Office Office Action dated Mar. 2, 1999.
Shimada, et al., "LCD Backlight Inverter Using Piezoelectric Transformer", NEC, vol. 48, No. 10/1995, pp. 122-126.

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