Metal working – Piezoelectric device making
Patent
1987-03-31
1987-11-10
Hall, Carl E.
Metal working
Piezoelectric device making
310800, 310335, H01L 4122
Patent
active
047047747
ABSTRACT:
An ultrasonic transducer includes a plate-shaped piezoelectric body made of a piezoelectric polymer material and having a polarized portion obtained by polarizing a prescribed region thereof, as well as first and second unpolarized portions contiguous to the polarized portion. A first electrode is formed on one main surface of the piezoelectric body to cover the polarized portion and has an edge portion extending over the first unpolarized portion. A second electrode is formed on the other main surface of the piezoelectric body to cover the polarized portion and has an edge portion extending over the second unpolarized portion. A first conductive lead is electrically connected to the edge portion of the first electrode, and a second conductive lead is electrically connected to the edge portion of the second electrode.
REFERENCES:
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patent: 4315433 (1982-02-01), Edelman et al.
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patent: 4433400 (1984-02-01), De Reggi et al.
Fujii Tadashi
Sasaki Masahiro
Seo Iwao
Yagami Hiroyuki
Hall Carl E.
Mitsubishi Petrochemical
Terumo Kabushiki Kaisha
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