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:
Sep. 03, 2024
Filed:
Aug. 03, 2021
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Tatsuji Nakajima, Abiko, JP;
Ryutaro Harada, Tokyo, JP;
Takeshi Sakamoto, Fujimino, JP;
Shuichi Tamura, Misato, JP;
Akihito Haruki, Saitama, JP;
Shota Yamanishi, Nagareyama, JP;
Ryoma Yasui, Nagareyama, JP;
DAI NIPPON PRINTING CO., LTD., Tokyo, JP;
Abstract
Provided is a barrier film that can suppress a change in color when applied to a wavelength conversion sheet. A barrier film for a wavelength conversion sheet, comprising an inorganic oxide layer A, an organic coating layer B, an inorganic oxide layer C, and a primer layer D in presented order on a light-transmitting base material, wherein thicknesses of the light-transmitting base material, the inorganic oxide layer A, the organic coating layer B, the inorganic oxide layer C, and the primer layer D are defined as t, t, t, t, and t, respectively; tis 150 nm or more and 500 nm or less; and t/tis 0.55 or more and 1.65 or less.