Title:
POLARIZATION FILM, IMAGE DISPLAY DEVICE AND POLARIZATION FILM PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/192615
Kind Code:
A1
Abstract:
The present invention provides a polarization film capable of suppressing sufficiently the outward permeation of iodine contained in a polarizer under a high-temperature and high-humidity environment. This polarization film comprises a polarizer containing iodine, and a resin layer containing a polymer having a structure unit derived from a (meth)acrylic acid ester. In the polarization film, the value of y1 as calculated from formula (1) is less than 1.3. (1): y1 = (0.279) x1 + (-1.51) x2 + (0.178) x3 + 0.386
In formula (1), x1 represents the number of rotatable bonds contained in a monomer for forming the polymer, x2 represents the number of reactive sites contained in the monomer, and x3 represents a polar term δP (MPa1/2) in the Hansen solubility parameters for the monomer.
Inventors:
KATAYAMA MOTOSUKE (JP)
KANNO RYO (JP)
FUKUYAMA YOSHITO (JP)
KANNO RYO (JP)
FUKUYAMA YOSHITO (JP)
Application Number:
PCT/JP2021/003597
Publication Date:
September 30, 2021
Filing Date:
February 01, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B32B7/023; B32B27/30
Domestic Patent References:
| WO2019058778A1 | 2019-03-28 | |||
| WO2014119487A1 | 2014-08-07 |
Foreign References:
| JP2019185061A | 2019-10-24 |
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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