Title:
MULTILAYER BODY, OPTICAL ELEMENT AND LIGHT GUIDE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2023/127537
Kind Code:
A1
Abstract:
A first problem to be addressed by the present invention is to provide a multilayer body which has excellent light resistance. A second problem to be addressed by the present invention is to provide an optical element and a light guide element, each of which is provided with the above-described multilayer body. A multilayer body according to the present invention comprises an optically anisotropic layer that is formed of a cured product of a composition that contains a liquid crystalline compound, and a pair of oxygen barrier layers that are arranged on both sides of the optically anisotropic layer; the optically anisotropic layer has a liquid crystal alignment pattern in which the direction of the optical axis derived from the liquid crystal compound rotationally changes in a continuous manner along at least one in-plane direction; the composition contains a compound that has a partial structure represented by formula (I); the composition contains, as the liquid crystalline compound, the compound that has a partial structure represented by formula (I), or alternatively, the composition contains, as a compound other than the liquid crystalline compound, the compound that has a partial structure represented by formula (I); and the oxygen permeability coefficient of the oxygen barrier layers at 25°C and 50% RH is 1.0 × 10-11cm3∙cm/(cm2∙s∙mmHg) or less. In formula (I), each of A1 and A2 independently represents an optionally substituted aromatic hydrocarbon ring group or aromatic heterocyclic group; and * denotes a bonding position.
Inventors:
FUKUSHIMA YUKI (JP)
KODAMA KEISUKE (JP)
KATOH SHUNYA (JP)
KANEIWA HIDEKI (JP)
KODAMA KEISUKE (JP)
KATOH SHUNYA (JP)
KANEIWA HIDEKI (JP)
Application Number:
PCT/JP2022/046328
Publication Date:
July 06, 2023
Filing Date:
December 16, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30; B32B27/00; C09K19/18; C09K19/30; C09K19/34; C09K19/38; G02B5/18
Domestic Patent References:
| WO2018034216A1 | 2018-02-22 | |||
| WO2020175448A1 | 2020-09-03 | |||
| WO2020022496A1 | 2020-01-30 |
Foreign References:
| JP2008505235A | 2008-02-21 | |||
| JPH0959219A | 1997-03-04 | |||
| JP2019028196A | 2019-02-21 | |||
| JP2001249222A | 2001-09-14 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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