Title:
CIRCULARLY POLARIZING FILM LAMINATE WITH PRESSURE-SENSITIVE ADHESIVE LAYER, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/220256
Kind Code:
A1
Abstract:
Provided is a circularly polarizing film laminate with a pressure-sensitive adhesive layer, which comprises: a circularly polarizing film laminate in which a first transparent protective film is bonded to one surface of a polarizing film via an adhesive layer and a retardation film is bonded to the other surface of the polarizing film via an adhesive layer; and a pressure-sensitive adhesive layer on the retardation film side of the circularly polarizing film laminate, and is characterized by having a single transmittance of 41-42.5%. This circularly polarizing film laminate with the pressure-sensitive adhesive layer can suppress reflectance change under a humid and hot environment.
Inventors:
YAMASHITA TOMOHIRO (JP)
NAGAHATA KEIJI (JP)
KAWAMURA RYO (JP)
TAKADA KATSUNORI (JP)
NAGAHATA KEIJI (JP)
KAWAMURA RYO (JP)
TAKADA KATSUNORI (JP)
Application Number:
PCT/JP2022/017668
Publication Date:
October 20, 2022
Filing Date:
April 13, 2022
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B32B7/023; B32B9/00; G02F1/1335; G09F9/00; H01L27/32; H01L51/50; H05B33/02; H05B33/14
Domestic Patent References:
| WO2021225114A1 | 2021-11-11 | |||
| WO2020100871A1 | 2020-05-22 | |||
| WO2020100887A1 | 2020-05-22 |
Foreign References:
| JP2017054093A | 2017-03-16 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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