Title:
POLARIZING PLATE AND IMAGE DISPLAY DEVICE USING SAID POLARIZING PLATE
Document Type and Number:
WIPO Patent Application WO/2023/286576
Kind Code:
A1
Abstract:
The present invention aims to provide a novel polarizing plate that: has an adhesive layer formed from an adhesive that has sufficient pot life during production; and suppresses reduction in transmittance when exposed to high-temperature environments. This polarizing plate has: a polarizing element that is obtained by causing a dichroic pigment to be 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. The polarizing element and the transparent protective film are joined to each other by an adhesive layer that is formed from an adhesive containing a first compound, a second compound, and a third compound. The first compound is at least one type selected from the group consisting of urea, a urea derivative, thiourea, and a thiourea derivative. The second compound is a dialdehyde. The third compound is a dicarboxylic acid.
Inventors:
FUKUDA KENICHI (JP)
SATO SHOTA (JP)
SATO SHOTA (JP)
Application Number:
PCT/JP2022/025483
Publication Date:
January 19, 2023
Filing Date:
June 27, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B7/023; C09J7/29; C09J11/06; C09J129/04; C09J201/00; G02F1/1335; G06F3/041; G09F9/30; H05B33/02
Foreign References:
| JP2020204641A | 2020-12-24 | |||
| JP2021081716A | 2021-05-27 | |||
| JP2010276673A | 2010-12-09 | |||
| JP2022060763A | 2022-04-15 | |||
| JP2022060766A | 2022-04-15 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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