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:
Nov. 11, 2025
Filed:
Nov. 18, 2020
Applicant:
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/11 (2015.01); G02B 5/30 (2006.01); H10K 59/80 (2023.01);
U.S. Cl.
CPC ...
G02B 1/11 (2013.01); G02B 5/3025 (2013.01); H10K 59/879 (2023.02); H10K 59/8791 (2023.02);
Abstract
An optical film according to an embodiment includes a substrate, a surface memberprovided on a front surface of the substrate, and an optical functional layerprovided on a back surface of the substrate. The optical functional layerincludes a low-refractive index layerand a high-refractive index layer, and an interface between the low-refractive index layerand the high-refractive index layerhas a recessed/protruding shape. The refractive index of the high-refractive index layer, the refractive index of the substrate, and the refractive index of the surface memberbecome smaller in this order.