Method for fabricating a ferroelectric polymer film
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United States of America Patent
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Jan 18, 2005
Grant Date -
Mar 20, 2003
app pub date -
Apr 29, 2002
filing date -
Sep 10, 2001
priority date (Note) -
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Abstract
A film made of a vinylidene-trifluoroethylene or tetrafluoroethylene copolymer is uniaxially drawn to fabricate a uniaxially drawn film. Then, the uniaxially drawn film is thermally treated at a temperature within a temperature range of the Curie temperature through the melting point of the vinylidene-trifluoroethylene or tetrafluoroethylene copolymer for five hours or over, to diffuse the molecular chains of the uniaxially drawn film along the orientation direction and thus, to remove the intertwining between the molecular chains.
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