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.:
Date of Patent:
Aug. 04, 2026
Filed:
Mar. 15, 2024
Applicant:
Daikin Industries, Ltd., Osaka, JP;
Inventors:
Masaharu Arimoto, Osaka, JP;
Saori Sakami, Osaka, JP;
Tetsuhiro Kodani, Osaka, JP;
Takashi Kanemura, Osaka, JP;
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10N 30/85 (2023.01); C08J 5/18 (2006.01); H10N 30/00 (2023.01); H10N 30/87 (2023.01);
U.S. Cl.
CPC ...
H10N 30/85 (2023.02); C08J 5/18 (2013.01); H10N 30/704 (2024.05); H10N 30/87 (2023.02); C08J 2327/16 (2013.01);
Abstract
An object is to provide an organic piezoelectric film with a high level of piezoelectricity, a high level of transparency, and a low level of retardation. The organic piezoelectric film of the present disclosure has a total light transmittance of 90% or more, an internal haze value of 0.2%/μm or less per unit film thickness or an internal haze value of 4% or less, piezoelectric constant dof 13 pC/N or more, and a retardation within the range of 0.01 to 10 nm/μm per unit film thickness or a retardation within the range of 0.1 to 900 nm.