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:
Oct. 05, 2021
Filed:
Feb. 27, 2019
Fujifilm Corporation, Tokyo, JP;
Megumi Sekiguchi, Kanagawa, JP;
Tatsuya Oba, Kanagawa, JP;
Kenichi Kakishita, Kanagawa, JP;
Masayuki Kusumoto, Kanagawa, JP;
Natsuru Chikushi, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A phosphor-containing film contains a phosphor such as a quantum dot and is capable of suppressing deterioration of phosphor even where the film is formed into a laminated structure; and a backlight unit including the phosphor-containing film as a wavelength converting member. The film includes: a phosphor-containing layer in which a plurality of fluorescent regions, each of which contains a phosphor that deteriorates through reaction with oxygen when exposed to oxygen, are discretely arranged and a resin layer having impermeability to oxygen is arranged among the plurality of the discretely arranged fluorescent regions; and a first substrate film and a second substrate film, which are respectively laminated on both main surfaces of the phosphor-containing layer, in which the resin layer has a Knoop hardness of 115 N/mmto 285 N/mm, a creep recovery rate of 22% or less, and an elastic recovery rate of 60% or more.