Title:
LIGHT-ABSORPTION ANISOTROPIC LAYER, OPTICAL FILM, VIEWING ANGLE CONTROL SYSTEM, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/276679
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a light-absorption anisotropic layer which has high contrast, and whereby a change in color tone relative to an original image can be suppressed in an image projected on a surrounding area (e.g., a window glass, etc.) can be suppressed when the light-absorption anisotropic layer is used in a viewing angle control system; and an optical film, viewing angle control system, and image display device that use the light-absorption anisotropic layer. This light-absorption anisotropic layer is formed from a liquid crystal composition containing a liquid crystalline compound, a dichroic substance, and an alignment agent, the liquid crystalline compound exhibiting a smectic-phase liquid crystal state, the content of the dichroic substance being at least 5.0% by mass with respect to the total solid content of the liquid crystal composition, and the angle θ formed by the center axis of transmittance of the light-absorption anisotropic layer and the normal direction of the surface of the light-absorption anisotropic layer being 0° to 45°.
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Inventors:
MATSUYAMA HIROSHI (JP)
HOSHINO WATARU (JP)
WATANABE SHINYA (JP)
MITOBE FUMITAKE (JP)
HOSHINO WATARU (JP)
WATANABE SHINYA (JP)
MITOBE FUMITAKE (JP)
Application Number:
PCT/JP2022/024052
Publication Date:
January 05, 2023
Filing Date:
June 16, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30; C09K19/02; C09K19/56; G02F1/1335; H05B33/02
Domestic Patent References:
| WO2017195833A1 | 2017-11-16 | |||
| WO2021054099A1 | 2021-03-25 | |||
| WO2018079854A1 | 2018-05-03 |
Foreign References:
| JP2016027387A | 2016-02-18 | |||
| JP2020181150A | 2020-11-05 | |||
| JP2006091871A | 2006-04-06 | |||
| JP2009145776A | 2009-07-02 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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