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:
Feb. 15, 2022
Filed:
Mar. 16, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Assignee:
LG CHEM, LTD., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/28 (2006.01); B32B 27/08 (2006.01); C08G 73/10 (2006.01); C08J 5/12 (2006.01); B32B 37/02 (2006.01); B32B 37/06 (2006.01); B32B 37/10 (2006.01); C08J 7/04 (2020.01); C08J 5/18 (2006.01);
U.S. Cl.
CPC ...
C08J 7/0427 (2020.01); B32B 27/08 (2013.01); B32B 27/281 (2013.01); B32B 37/02 (2013.01); B32B 37/06 (2013.01); B32B 37/10 (2013.01); C08G 73/1067 (2013.01); C08G 73/1071 (2013.01); C08J 5/18 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2379/08 (2013.01); B32B 2457/20 (2013.01); C08J 2379/08 (2013.01); C08J 2479/08 (2013.01);
Abstract
The present invention relates to a laminated film roll body, around which a laminated film is wound, the laminated film including: a first polyimide film; and a second polyimide film laminated on the first polyimide film and made of a fluorine-based, siloxane-based, or amine-based polyamic acid, wherein the second polyimide film has a glass transition temperature of 350° C. or higher when measured by a temperature elevation rate of 20° C./min. The laminated film roll body can be used in a continuous manufacturing process of a flexible device to improve process yield and efficiency.