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. 14, 2025
Filed:
Jan. 13, 2021
Applicant:
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Inventors:
Tsuyoshi Kashiwagi, Tokyo, JP;
Takahiro Takeshima, Tokyo, JP;
Assignee:
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); H10K 50/80 (2023.01); H10K 50/858 (2023.01);
U.S. Cl.
CPC ...
G02F 1/133526 (2013.01); G02F 1/133528 (2013.01); H10K 50/858 (2023.02); H10K 50/868 (2023.02);
Abstract
An optical film includes a low-refractive-index layer that includes a plurality of lens portions, and a high-refractive-index layer that fills a space between the plurality of lens portions. The lens portions each have a columnar shape and have a flat portion at an end thereof, and are arranged two-dimensionally. Distances between portions of the lens portions satisfy the following equation:((−(()/2))×(−(()/2)))/() is 0.42 or greater and 0.70 or less.