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:
Feb. 08, 2022
Filed:
Jun. 13, 2019
Fujifilm Corporation, Tokyo, JP;
Tatsuya Oba, Kanagawa, JP;
Satoshi Kuniyasu, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Provided is a thin wavelength conversion film in which a phosphor can be uniformly dispersed and deterioration of the phosphor caused by oxygen can also be prevented; and a backlight unit including the wavelength conversion film. The wavelength conversion film includes a wavelength conversion layer and a substrate, in which the wavelength conversion layer includes a binder and particles including a phosphor, an oxygen permeability coefficient of the binder is 0.01 (cc·mm)/(m·atm) or lower, an oxygen permeability coefficient of the matrix is 10 to 1000 (cc·mm)/(m·day·atm), and a content of the particles in the wavelength conversion layer is 3 to 30 vol %.