Title:
POLARIZING PLATE AND ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/171930
Kind Code:
A1
Abstract:
A polarizing plate which sequentially comprises a hard coat layer, a protective film, a polarizer and a retardation film in this order from the viewing side, wherein: at least one of the hard coat layer and the protective film contains a dye compound that has a maximum absorption wavelength within the range of more than 380 nm but not more than 430 nm in the absorption spectrum of the wavelength range of from 300 nm to 460 nm; at least one of the protective film and the retardation film contains an ultraviolet absorbent; and the layer that contains the dye compound is positioned closer to the viewing side than the layer that contains the ultraviolet absorbent.
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Inventors:
YAMAMOTO KEN (JP)
Application Number:
PCT/JP2021/003677
Publication Date:
September 02, 2021
Filing Date:
February 02, 2021
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
G02B5/30; G02B1/14; G02B5/22; H01L27/32; H01L51/50; H05B33/02
Domestic Patent References:
| WO2020100926A1 | 2020-05-22 | |||
| WO2020137529A1 | 2020-07-02 | |||
| WO2019202815A1 | 2019-10-24 |
Foreign References:
| JP2020003650A | 2020-01-09 | |||
| JP2017168430A | 2017-09-21 | |||
| JP2019091040A | 2019-06-13 | |||
| US20190107657A1 | 2019-04-11 | |||
| JP2017120430A | 2017-07-06 | |||
| JP2019204086A | 2019-11-28 |
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (JP)
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