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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 11575082 B1

PDFFull Text
Date of Patent:
Feb. 07, 2023

Filed:

Oct. 27, 2017

Structure for use in piezoelectric element, braided piezoelectric element, fabric-like piezoelectric element using braided piezoelectric element, and device using these

Applicants:

Teijin Limited, Osaka, JP;

Kansai University, Suita, JP;

Inventors:

Yoshiro Tajitsu, Suita, JP;

Shunsuke Kanematsu, Osaka, JP;

Yuhei Ono, Osaka, JP;

Assignees:

TEIJIN LIMITED, Osaka, JP;

KANSAI UNIVERSITY, Suita, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

David Vu

Assistant Examiner:

Brandon C Fox

Int. Cl.
CPC ...
D04B 1/16 (2006.01); H01L 41/08 (2006.01); H01L 41/193 (2006.01); D04B 1/22 (2006.01); D04B 21/16 (2006.01); D04B 21/20 (2006.01); D04C 1/02 (2006.01); D04C 1/12 (2006.01); G01B 7/16 (2006.01); H01L 41/04 (2006.01); H01L 41/053 (2006.01); H01L 41/113 (2006.01); H01L 41/087 (2006.01);
U.S. Cl.
CPC ...
H01L 41/193 (2013.01); D04B 1/16 (2013.01); D04B 1/22 (2013.01); D04B 21/16 (2013.01); D04B 21/20 (2013.01); D04C 1/02 (2013.01); D04C 1/12 (2013.01); G01B 7/16 (2013.01); H01L 41/042 (2013.01); H01L 41/0533 (2013.01); H01L 41/082 (2013.01); H01L 41/087 (2013.01); H01L 41/1132 (2013.01); D10B 2401/18 (2013.01); H01L 41/113 (2013.01);
Abstract

A structure includes an oriented piezoelectric polymer arranged in a circular tubular or circular columnar shape, wherein the orientation angle of the piezoelectric polymer with respect to the central axis of the structure is 15° to 75°, the piezoelectric polymer includes a crystalline polymer having an absolute value of 0.1 to 1000 pC/N for the piezoelectric constant d14 when the orientation axis is the third axis, and the piezoelectric polymer includes a P-body containing a crystalline polymer with a positive piezoelectric constant d14 value and an N-body containing a crystalline polymer with a negative value, wherein for the portion of the central axis of the structure having a length of 1 cm, the value of T1/T2 is 0 to 0.8, T1 being the smaller and T2 being the larger of (ZP+SN) and (SP+ZN), where ZP, SP, ZN, and SN are particularly defined masses.

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