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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9735004 B1

PDFFull Text
Date of Patent:
Aug. 15, 2017

Filed:

Aug. 04, 2016

Pvdf-trfe co-polymer having improved ferroelectric properties, methods of making a pvdf-trfe co-polymer having improved ferroelectric properties and methods of changing the end group of a pvdf-trfe co-polymer

Applicants:

Jakob Nilsson, Linkoping, SE;

Christian Brox-nilsen, Linkoping, SE;

Inventors:

Jakob Nilsson, Linkoping, SE;

Christian Brox-Nilsen, Linkoping, SE;

Assignee:

Thin Film Electronics ASA, Oslo, NO;

Attorneys:

Andrew D. Fortney

Central California IP Group, P.C.

Primary Examiner:

William Cheung

Int. Cl.
CPC ...
C08L 27/12 (2006.01); C08F 14/18 (2006.01); C08F 14/04 (2006.01); H01L 21/02 (2006.01); C08F 8/00 (2006.01); C08F 8/04 (2006.01); C08F 8/12 (2006.01); C08F 8/20 (2006.01); C08F 8/26 (2006.01); H01L 37/02 (2006.01); H01L 41/193 (2006.01); H01L 27/11507 (2017.01); H01L 27/1159 (2017.01); C08F 214/18 (2006.01); C08F 214/22 (2006.01);
U.S. Cl.
CPC ...
H01L 21/0212 (2013.01); C08F 8/00 (2013.01); C08F 8/04 (2013.01); C08F 8/12 (2013.01); C08F 8/20 (2013.01); C08F 8/26 (2013.01); H01L 27/1159 (2013.01); H01L 27/11507 (2013.01); H01L 37/025 (2013.01); H01L 41/193 (2013.01); C08F 214/182 (2013.01); C08F 214/22 (2013.01); C08F 2500/02 (2013.01); C08F 2810/40 (2013.01);
Abstract

A method of exchanging or transforming end groups in and/or improving the ferroelectric properties of a PVDF-TrFE co-polymer is disclosed. A bulky or chemically dissimilar end group, such as an iodine, sulfate, aldehyde or carboxylic acid end group, may be transformed to a hydrogen, fluorine or chlorine atom. A method of making a PVDF-TrFE co-polymer is disclosed, including polymerizing a mixture of VDF and TrFE using an initiator, and transforming a bulky or chemically dissimilar end group to a hydrogen, fluorine or chlorine atom. A PVDF-TrFE co-polymer or other fluorinated alkene polymer is also disclosed. The co-polymer may be used as a ferroelectric, electromechanical, piezoelectric or dielectric material in an electronic device.

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