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:
Jul. 02, 2024
Filed:
Mar. 17, 2022
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Takeshi Sakamoto, Fujimino, JP;
Ryutaro Harada, Tokyo, JP;
Shuichi Tamura, Misato, JP;
Akihito Haruki, Saitama, JP;
Shota Yamanishi, Nagareyama, JP;
Yuko Fujioka, Matsudo, JP;
DAI NIPPON PRINTING CO., LTD., Tokyo, JP;
Abstract
Provided is a film for a wavelength conversion sheet that can suppress a change in color with time when applied to a wavelength conversion sheet. A film for a wavelength conversion sheet, comprising a primer layer and a first base material film in presented order, wherein a refractive index of the primer layer is defined as n, a thickness of the primer layer is defined as t, and a refractive index of the first base material film is defined as n, and the following condition 1 or the following condition 2 is satisfied: Condition 1: n<n, and drepresented by the following expression 1 represents a range of x±0.10 wherein x is an odd integer; Condition 2: n>n, and drepresented by the following expression 1 represents a range of x±0.10 wherein x is an even integer; Expression 1: d=n×t/112.5 nm.