Title:
OPTICAL LAYERED BODY
Document Type and Number:
WIPO Patent Application WO/2023/013416
Kind Code:
A1
Abstract:
[Problem] To provide an optical layered body in which it is possible to reduce the amount by which a reflected hue changes from before to after storage in a high-temperature and high-humidity environment. [Solution] In this optical layered body, a polarizer, a first adhesive layer, and a retardation layer are layered in the stated order. The retardation layer includes a cured material layer of a polymerizable liquid crystal compound. The polarizer is obtained by adsorption and alignment of iodine on a polyvinyl alcohol resin film, and satisfies at least one of conditions (a) and (b). (a): The absorbance A(295) at a wavelength of 295 nm is 0.85 or less. (b): The absorbance A(360) at a wavelength of 360 nm is 0.55 or less. (Selected drawing) FIG. 1
Inventors:
INADA KIYOTAKA (JP)
Application Number:
PCT/JP2022/028202
Publication Date:
February 09, 2023
Filing Date:
July 20, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30
Domestic Patent References:
| WO2011114871A1 | 2011-09-22 |
Foreign References:
| JP2016138958A | 2016-08-04 | |||
| JP2010145525A | 2010-07-01 | |||
| JP2020126226A | 2020-08-20 | |||
| JP2015036729A | 2015-02-23 | |||
| JP2011002816A | 2011-01-06 | |||
| JP2015180910A | 2015-10-15 | |||
| JP2021099479A | 2021-07-01 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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