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. 06, 2026
Filed:
Jun. 28, 2022
SK Microworks Co., Ltd., Gyeonggi-do, KR;
SK Microworks Solutions Co., Ltd., Chungcheongnam-do, KR;
Sun Hwan Kim, Gyeonggi-do, KR;
Dae Seong Oh, Gyeonggi-do, KR;
Yun-Hee Seo, Chungcheongnam-do, KR;
Jin Woo Lee, Gyeonggi-do, KR;
SK MICROWORKS CO., LTD., Gyeonggi-do, KR;
SK MICROWORKS SOLUTIONS CO., LTD., Chungcheongnam-do, KR;
Abstract
The embodiments provide a polyamide-imide-based film that comprises a polyamide-imide-based polymer and has an rSE value of 0.8 to 1.25 as represented by the following Equation 1, whereby it is excellent in adhesion to a hard coating layer and light resistance to a UV light source, a process for preparing the same, and a composite film and a display device comprising the same. <Equation 1> rSE=SE1/SE2 In Equation 1, SE1 is the surface energy (dyne/cm) of a first side of the film, and SE2 is the surface energy (dyne/cm) of a second side of the film.