Title:
POLARIZING PLATE WITH ADHESIVE LAYER
Document Type and Number:
WIPO Patent Application WO/2022/004138
Kind Code:
A1
Abstract:
[Problem] To provide a polarizing plate with an adhesive layer, said polarizing plate being suppressed in iodine loss even in a high-temperature high-humidity environment. [Solution] A polarizing plate with an adhesive layer, which is provided with a polarizer and a protective film that is arranged on one side of the polarizer with a bonding agent layer being interposed therebetween, while being provided, on the other side of the polarizer, with a second adhesive layer, a functional layer and a first adhesive layer in this order from the polarizer side. With respect to this polarizing plate with an adhesive layer, the functional layer is composed of a single layer of a liquid crystal cured layer, or is alternatively composed of two or more layers that are selected from the group consisting of a liquid crystal cured layer, an alignment layer and a bonding layer; the polarizer is a film that is obtained by having iodine adsorbed on a hydrophilic polymer film; and the first adhesive layer has a water vapor transmission rate of 500 g/(m2·day) or less at a temperature of 40°C at a relative humidity of 90% R.H..
Inventors:
JINNO TORU (JP)
SHIRAISHI TAKAYUKI (JP)
MATSUMOTO TOSHIKAZU (JP)
SHIRAISHI TAKAYUKI (JP)
MATSUMOTO TOSHIKAZU (JP)
Application Number:
PCT/JP2021/017880
Publication Date:
January 06, 2022
Filing Date:
May 11, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; C09J7/30; C09J7/38; C09J123/00; C09J123/10; C09J201/00; G02F1/1335; G02F1/13363; H01L27/32; H01L51/50; H05B33/02
Domestic Patent References:
| WO2019003679A1 | 2019-01-03 | |||
| WO2020070962A1 | 2020-04-09 |
Foreign References:
| JP2019159311A | 2019-09-19 | |||
| JP2017058519A | 2017-03-23 | |||
| JP2018039863A | 2018-03-15 | |||
| JP2020098317A | 2020-06-25 | |||
| JP2015007700A | 2015-01-15 | |||
| JP2017203835A | 2017-11-16 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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