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:
Jun. 03, 2025
Filed:
Jun. 30, 2020
Toyobo Co., Ltd., Osaka, JP;
Yohei Yamaguchi, Otsu, JP;
Kokichi Tokuo, Otsu, JP;
Shotaro Nishio, Tsuruga, JP;
Kiwamu Kawai, Tsuruga, JP;
TOYOBO CO., LTD., Osaka, JP;
Abstract
Provided is a hard coating film for foldable displays that does not form creases or cracks in the folding portion, and that is also excellent in reducing iridescent colors (interference mottling) caused by fine cracks in an easy-to-adhere resin layer or other layers. The hard coating film for a foldable display contains a polyester film having a thickness of 10 to 80 μm, an easy-to-adhere resin layer, and a hard coating layer, the easy-to-adhere resin layer and the hard coating layer being stacked in this order on at least one surface of the polyester film, wherein the easy-to-adhere resin layer is a cured product of a composition containing a binder resin and at least one type of particles selected from the group consisting of titanium oxide particles, zirconium oxide particles, and silica particles, the at least one type of particles have a mean particle size of 5 to 150 nm, and the polyester film having the easy-to-adhere resin layer stacked thereon but not yet having the hard coating layer stacked thereon satisfies specific conditions.