Procedure to polarize at least one zone of a foil of ferroelectr

Details Procedure to polarize at least one zone of a foil of ferroelectr Procedure to polarize at least one zone of a foil of ferroelectr

1994-01-05

1996-02-20

Vo, Peter

Metal working

Piezoelectric device making

296311, 310365, H04R 1700

Patent

active

054918790

ABSTRACT:
A method of polarizing selected areas of a foil of ferroelectric material, wherein electrodes are deposited in such a way on the opposite surfaces of the foil that the zone to be polarized extends between these two electrodes. The zone to be polarized is compressed and a variable voltage is applied across the electrodes. Each electrode is connected to an insulating support whose surface exceeds that of the zone to be polarized on the foil of ferroelectric material. Besides the electrode, the insulating support has a layer of dielectric material whose external surface is level with the external surface of the electrode.

REFERENCES:
patent: 4574438 (1986-03-01), Diepers et al.
patent: 4612145 (1986-09-01), Keith et al.
patent: 4651120 (1987-03-01), Aagard
patent: 4783888 (1988-11-01), Fujii et al.
patent: 5058250 (1991-10-01), Turnbull

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