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Patent Searching and Data


Title:
OPTICAL LAYERED BODY
Document Type and Number:
WIPO Patent Application WO/2021/205726
Kind Code:
A1
Abstract:
[Problem] To provide an optical layered body (11) which comprises a retardation layer (1) and which has high durability such that the optical performance is less likely to change even when the optical layered body (11) is irradiated with highly strong ultraviolet rays and the performance is less likely to change even in a harsh environment. [Solution] An optical layered body (11) comprising: a retardation layer (1) which comprises a retardation exhibiting layer that is made of a material obtained by curing a polymerizable liquid crystal composition containing at least one type of polymerizable liquid crystal compound; and a gas barrier layer (2) which is adjacent to at least one surface of the retardation layer (1), the gas barrier layer (2) having an oxygen gas permeability of not more than 500 cm3/(m2・24h・atm).

Inventors:
DEZAKI HIKARI (JP)
Application Number:
PCT/JP2021/003880
Publication Date:
October 14, 2021
Filing Date:
February 03, 2021
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B7/023; G02F1/13363
Domestic Patent References:
WO2018186500A12018-10-11
WO2017217282A12017-12-21
WO2018047497A12018-03-15
WO2019054441A12019-03-21
Foreign References:
JP2003195271A2003-07-09
JP2019120949A2019-07-22
JP2010150513A2010-07-08
JP2005162892A2005-06-23
JP2013173357A2013-09-05
JP2010117537A2010-05-27
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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