Title:
OPTICAL LAMINATE
Document Type and Number:
WIPO Patent Application WO/2023/027119
Kind Code:
A1
Abstract:
[Problem] To provide an optical laminate in which a peelable film having an antistatic layer is stacked on a polarizing plate and which has excellent inspectability. [Solution] This optical laminate is configured by stacking a polarizing plate including a linear polarization layer, a first adhesive layer, and a peelable film that is peelable from the first adhesive layer in this order. The peelable film has a release processing layer, a first base material film, and a first antistatic layer containing an antistatic agent in order from the first adhesive layer side. The average in-plane retardation value at a wavelength of 550 nm of the peelable film is 1000 nm or more. The difference between the maximum value and the minimum value of the in-plane retardation value at a wavelength of 550 nm of the peelable film is 150 nm or less. [Selected drawing] FIG. 1
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Inventors:
YAMAGUCHI TOMOYUKI (JP)
Application Number:
PCT/JP2022/031909
Publication Date:
March 02, 2023
Filing Date:
August 24, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30
Domestic Patent References:
| WO2020241589A1 | 2020-12-03 | |||
| WO2000044841A1 | 2000-08-03 | |||
| WO2018181070A1 | 2018-10-04 |
Foreign References:
| JP2010113367A | 2010-05-20 | |||
| JP2020160421A | 2020-10-01 | |||
| JP2016006508A | 2016-01-14 | |||
| JP2015169848A | 2015-09-28 | |||
| JP2014168857A | 2014-09-18 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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