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:
Jan. 16, 2024
Filed:
Sep. 11, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventor:
Jinho Lee, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/10 (2006.01); C08J 5/18 (2006.01); G01N 5/04 (2006.01); H10K 77/10 (2023.01);
U.S. Cl.
CPC ...
C08G 73/1067 (2013.01); C08J 5/18 (2013.01); G01N 5/04 (2013.01); C08J 2379/08 (2013.01); H10K 77/111 (2023.02);
Abstract
The present invention provides a polyimide film comprising a polyimide, of which the Intvalue calculated from equation 1 is −3 or greater when the weight reduction rate measured by the thermogravimetric method (TGA) is 5%. The film according to the present invention can exhibit excellent thermal stability even in high-temperature conditions, and thus maintain excellent heat resistance and mechanical characteristics against high-temperature heat added during the display device manufacturing process. In equation 1, Ea, R, T, β, P(X), and tare the same as those defined in the detailed description.