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:
Dec. 02, 2025
Filed:
Oct. 16, 2023
Fujifilm Corporation, Tokyo, JP;
Katsumi Sasata, Minami-ashigara, JP;
Hiroshi Sato, Minami-ashigara, JP;
Yukito Saitoh, Minami-ashigara, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Provided are a cholesteric liquid crystal layer having high diffraction efficiency, method of forming the same, a laminate, light guide element, and image display device including the cholesteric liquid crystal layer. The cholesteric liquid crystal layer obtained by immobilizing a cholesteric liquid crystalline phase, in which the cholesteric liquid crystal layer has a liquid crystal alignment pattern having a direction of an optical axis from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, in a cross-section observed with SEM, bright portions and dark portions are tilted, where a tilt angle of a direction in which in-plane retardation is minimum with respect to a normal line in a slow or fast axis plane is θ2, an absolute value of an optical axis tilt angle φ is 'sin θ2=n·sin φ (n represents an average refractive index of the cholesteric liquid crystal layer)' is 5° or more.