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. 23, 2026
Filed:
Jul. 14, 2023
Toppan Inc., Tokyo, JP;
Toppan Tomoegawa Optical Films Co., Ltd., Tokyo, JP;
Yoshiko Ishimaru, Tokyo, JP;
Sohei Kadota, Tokyo, JP;
Koichi Minato, Tokyo, JP;
Ryota Ozaki, Tokyo, JP;
Rui Inoue, Tokyo, JP;
TOPPAN INC., Tokyo, JP;
TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD., Tokyo, JP;
Abstract
Provided are an optical film that can reduce reflectance, increase luminance, reduce thickness, and improve color reproducibility a display device, and a display device using the same. An optical film characterized by comprising a transparent substrate, a colored layer laminated on one surface side of the transparent substrate and containing a dye, and a functional layer laminated on the other surface side of the transparent substrate, wherein the dye contains a first coloring material having a maximum absorption wavelength of 470 to 530 nm and a half width of the absorption spectrum of 15 to 45 nm, and a second coloring material having a maximum absorption wavelength of 560 to 620 nm and a half width of the absorption spectrum of 15 to 55 nm, and the transparent substrate has an ultraviolet shielding rate of 85% or more according to JIS L 1925.