Title:
POLARIZING PLATE AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/075148
Kind Code:
A1
Abstract:
The present invention provides a polarizing plate with which decreases in transmittance in high temperature environments can be suppressed, and which has excellent water resistance properties. A polarizing plate comprising a polarizing element that is obtained by having a dichroic pigment adsorbed and aligned on a polyvinyl alcohol resin layer, and a transparent protective film that is laminated on at least one surface of the polarizing element, wherein: the polarizing element and the transparent protective film are adhered to each other by an adhesive agent layer formed from an adhesive agent containing a urea compound and a dialdehyde; the urea compound is at least one substance selected from the group consisting of urea, urea derivatives, thiourea and thiourea derivatives; and the content ratio of the polarizing element is no less than the equilibrium moisture content at a temperature of 20°C and a relative humidity of 30%, and no more than the equilibrium moisture content at a temperature of 20°C and a relative humidity of 50%.
Inventors:
FUKUDA KENICHI (JP)
NAITOU RYO (JP)
NAITOU RYO (JP)
Application Number:
PCT/JP2021/035865
Publication Date:
April 14, 2022
Filing Date:
September 29, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B27/30; C09J7/30; C09J11/06; C09J129/04; C09J201/00; G02F1/1335; G06F3/041; G09F9/00; H01L27/32; H01L51/50; H05B33/02
Domestic Patent References:
| WO2011114871A1 | 2011-09-22 | |||
| WO2016002808A1 | 2016-01-07 | |||
| WO2021095541A1 | 2021-05-20 |
Foreign References:
| JPH0364703A | 1991-03-20 | |||
| JP2003315537A | 2003-11-06 | |||
| JP2007133212A | 2007-05-31 | |||
| JP2012108452A | 2012-06-07 | |||
| JP2005326531A | 2005-11-24 | |||
| JP2014186312A | 2014-10-02 | |||
| JP2014102353A | 2014-06-05 | |||
| JP2010276673A | 2010-12-09 | |||
| JP2013114200A | 2013-06-10 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
Download PDF:
Previous Patent: POLARIZING PLATE, AND IMAGE DISPLAY DEVICE
Next Patent: SOLID COMPOSITION AND PRODUCTION METHOD THEREFOR
Next Patent: SOLID COMPOSITION AND PRODUCTION METHOD THEREFOR