Method of polarizing at least one large area sheet of ferroelectric material
US5700359A · kind A · utility
15Cited by
1References
14Claims
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Key dates
| Filing date | Feb 20, 1996 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Feb 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
Abstract
A method of polarizing at least one large area sheet of ferroelectric material (1). The method comprises the following successive steps: placing films of ferroelectric material (2, 3) of thickness e.sub.1 against two opposite faces (1a, 1b) of the sheet (1) of thickness e.sub.2, the thickness e.sub.1 being a function of the respective coercive fields of the materials constituting the sheet (1) and the films (2, 3); placing electrodes (4, 5) on either side of and against the films of ferroelectric material (2, 3); compressing the resulting complex; and applying a cyclical voltage between the two electrodes (4, 5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.