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. 03, 2026
Filed:
Feb. 14, 2023
Nitto Denko Corporation, Osaka, JP;
Kozo Nakamura, Ibaraki, JP;
Shimpei Mukadeyama, Ibaraki, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
An optical laminate includes: a light extraction layer having a first main surface and a second main surface, and having a light extraction mechanism including a recessed portion arranged on any one of the first main surface or the second main surface; a first cover sheet laminated via a first pressure-sensitive adhesive layer on a main surface side of the light extraction layer on which the light extraction mechanism is arranged; and a second cover sheet laminated via a second pressure-sensitive adhesive layer on a main surface side of the light extraction layer on which the light extraction mechanism is prevented from being arranged. The optical laminate has a region having a refractive index lower than a refractive index of the first pressure-sensitive adhesive layer or the second pressure-sensitive adhesive layer arranged on any one of a first or a second main surface side of the light extraction layer.