Title:
POLARIZING PLATE, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/097407
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polarizing plate in which a decrease in transmittance in a high temperature environment is suppressed. Through the present invention, there is provided a polarizing plate having a polarizing element in which a dichroic dye is adsorbed and oriented in a polyvinyl alcohol-based resin layer, and a transparent protective film laminated on at least one surface of the polarizing element, wherein the polarizing element and the transparent protective film are pasted to each other by means of an adhesive layer formed of an adhesive containing a block isocyanate compound, and the water content of the polarizing element is equal to or greater than the equilibrium water content at a temperature of 20°C and a relative humidity of 30%, and is equal to or less than the equilibrium water content at a temperature of 20°C and a relative humidity of 50%.
Inventors:
FUKUDA KENICHI (JP)
SATO SHOTA (JP)
SATO SHOTA (JP)
Application Number:
PCT/JP2021/036761
Publication Date:
May 12, 2022
Filing Date:
October 05, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; C09J7/35; C09J7/38; C09J175/04; G02F1/1335
Domestic Patent References:
| WO2019188779A1 | 2019-10-03 |
Foreign References:
| JP2012108452A | 2012-06-07 | |||
| JP2001305345A | 2001-10-31 | |||
| JPH11295528A | 1999-10-29 | |||
| JP2012229375A | 2012-11-22 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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