Title:
OPTICAL LAYERED BODY, IMAGE DISPLAY PANEL AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/199959
Kind Code:
A1
Abstract:
The optical layered body provided includes a polarizing film and an adhesive sheet. The adhesive sheet includes an organic cationic electroconductive agent. In the optical layered body, |∆b*| is less than 0.60. The value |∆b*| is the absolute value of the chromaticity difference ∆b* with respect to transmitted light between a central section and an end section of the optical layered body, determined by a specific evaluation method using a heating test comprising irradiation with high-intensity light. The optical layered body, despite being provided with an adhesive sheet including an electroconductive agent, is suitable for use in an image display panel which may be combined with a high-intensity backlight.
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Inventors:
ONO HIROTOMO (JP)
KIMURA TOMOYUKI (JP)
TOYAMA YUSUKE (JP)
KIMURA TOMOYUKI (JP)
TOYAMA YUSUKE (JP)
Application Number:
PCT/JP2023/014938
Publication Date:
October 19, 2023
Filing Date:
April 12, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B32B7/023; B32B27/00; B32B27/18; B32B27/30; C09J7/38; C09J11/06; C09J133/00; C09J201/00; G02F1/1335
Foreign References:
| JP2018053066A | 2018-04-05 | |||
| JP2020144199A | 2020-09-10 | |||
| JP2020095263A | 2020-06-18 | |||
| JP2020002225A | 2020-01-09 | |||
| JP2014137477A | 2014-07-28 | |||
| JP2012117046A | 2012-06-21 | |||
| JP2011037927A | 2011-02-24 |
Attorney, Agent or Firm:
KAMADA Koichi (JP)
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