Title:
POLARIZING PLATE WITH RETARDATION LAYER AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/234100
Kind Code:
A1
Abstract:
The present invention provides a polarizing plate with a retardation layer, the polarizing plate being capable of contributing to the improvement of durability of an image display device in a high-temperature high-humidity environment. A polarizing plate with a retardation layer according to the present invention sequentially comprises, in the following order: a polarizing plate that has a first main surface and a second main surface, which are opposite to each other, while comprising a polarizer from the first main surface toward the second main surface; a first adhesive layer; a first retardation layer; a bonding agent layer; a second retardation layer; and a second adhesive layer. This polarizing plate with a retardation layer also comprises an adhesive layer that contains an antistatic agent. With respect to this polarizing plate with a retardation layer, the tensile elastic modulus at 110°C of an adjacent layer that is adjacent to the second main surface side of the first retardation layer is 1 MPa or more; the addition amount of the antistatic agent in the adhesive layer that contains the antistatic agent is 5 phr or less; and if this polarizing plate with a retardation layer is bonded to a multilayer body, which comprises a polyethylene terephthalate resin film having a thickness of 50 µm and an aluminum layer that is provided on one surface of the polyethylene terephthalate resin film and has a thickness of 0.05 µm, in such a manner that the second adhesive layer is bonded to the surface of the aluminum layer, the resistivity change of the aluminum layer after being maintained in the bonded state at 110°C and 85% RH for 36 hours is 2 or less.
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Inventors:
FUJITA MASATO (JP)
Application Number:
PCT/JP2023/018935
Publication Date:
December 07, 2023
Filing Date:
May 22, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B29C63/02; G02B1/14; G02F1/1335; G02F1/13363; G09F9/00; H10K50/86; H10K59/10
Domestic Patent References:
| WO2015194523A1 | 2015-12-23 | |||
| WO2022097594A1 | 2022-05-12 | |||
| WO2019031496A1 | 2019-02-14 | |||
| WO2020111232A1 | 2020-06-04 |
Foreign References:
| JP2019091023A | 2019-06-13 | |||
| JP2015129882A | 2015-07-16 | |||
| JP2013067680A | 2013-04-18 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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