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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 11548207 B1

PDFFull Text
Date of Patent:
Jan. 10, 2023

Filed:

Apr. 30, 2020

Polyester film and flexible display device comprising the same

Applicant:

Skc Co., Ltd., Gyeonggi-do, KR;

Inventors:

Gun Uk Kim, Gyeonggi-do, KR;

Young Min Heo, Gyeonggi-do, KR;

Sechul Lee, Gyeonggi-do, KR;

Jin-Seok Park, Gyeonggi-do, KR;

Sang Min Choi, Gyeonggi-do, KR;

Assignee:

SKC CO., LTD., Gyeonggi-do, KR;

Attorney:

IP & T Group LLP

Primary Examiner:

Ramsey Zacharia

Int. Cl.
CPC ...
B29C 55/14 (2006.01); B32B 17/10 (2006.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 27/36 (2006.01); H05K 5/03 (2006.01); B32B 27/06 (2006.01); C08J 5/18 (2006.01); G09F 9/30 (2006.01); B29L 31/34 (2006.01); B29K 67/00 (2006.01);
U.S. Cl.
CPC ...
B29C 55/143 (2013.01); B32B 17/10 (2013.01); B32B 27/08 (2013.01); B32B 27/281 (2013.01); B32B 27/36 (2013.01); H05K 5/03 (2013.01); B29K 2067/003 (2013.01); B29K 2995/0026 (2013.01); B29L 2031/3475 (2013.01); B32B 2307/412 (2013.01); B32B 2457/20 (2013.01);
Abstract

The polyester film according to the embodiment achieves the elasticity required for a cover of a flexible display by increasing the rate of increase in stress in an initial stage of strain to a certain level or higher. As a result, it is possible to maintain the original characteristics when it is applied to a cover of a flexible display device and subjected to a plurality of repeated folding. Accordingly, the polyester film can be applied to a cover of a flexible display device, in particular, a foldable display device to exhibit excellent characteristics.

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