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:
Jul. 26, 2022
Filed:
Apr. 21, 2020
Applicants:
Samsung Display Co., Ltd., Yongin-si, KR;
University-industry Cooperation Group of Kyung Hee University, Yongin-si, KR;
Inventors:
Chaungi Choi, Suwon-si, KR;
Sang-hyon Paek, Seongnam-si, KR;
Seulgi Kim, Suwon-si, KR;
Jangju Lee, Hwaseong-si, KR;
Assignees:
Samsung Display Co., Ltd., Yongin-si, KR;
University-Industry Cooperation Group of Kyung Hee University, Yongin-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/10 (2006.01); C08J 5/18 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1067 (2013.01); C08G 73/1042 (2013.01); C08G 73/1057 (2013.01); C08J 5/18 (2013.01); C08J 2379/08 (2013.01);
Abstract
A polyamic acid according to an embodiment is formed by a polymerization reaction of a dianhydride compound, a first diamine compound represented by the following Formula 1, and a second diamine compound, which is different from the first diamine compound. A polyimide film derived from the polyamic acid may exhibit excellent heat resistance and improved optical properties: