Invention Grant
- Patent Title: Optical film, polarizing plate, and image display device
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Application No.: US17013855Application Date: 2020-09-08
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Publication No.: US11485910B2Publication Date: 2022-11-01
- Inventor: Nobuyuki Akutagawa , Kunihiro Kasezawa , Takashi Komiyama
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: JCIPRNET
- Priority: JPJP2018-050009 20180316,JPJP2019-013119 20190129
- Main IPC: C09K19/56
- IPC: C09K19/56 ; C09K19/38 ; G02B5/30 ; G02F1/1335 ; H01L51/52

Abstract:
An object of the present invention is to provide an optical film which is excellent in the adhesiveness between a polymer support and a photo alignment film and in which a liquid crystal compound having reverse wavelength dispersibility is uniformly aligned. The optical film is obtained by laminating, in the following order: a polymer support containing an additive; a photo alignment film; and an optically anisotropic film, wherein the optically anisotropic film is formed of a polymerizable liquid crystal composition containing a polymerizable liquid crystal compound having reverse wavelength dispersibility, and an amount of a component derived from the additive of the polymer support, which is contained in a boundary region with the optically anisotropic film in the photo alignment film is 0.10 to 0.50 mass % with respect to a total mass of the photo alignment film.
Public/Granted literature
- US11518938B2 Optical film, polarizing plate, and image display device Public/Granted day:2022-12-06
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