Title:
偏光素子、円偏光板および画像表示装置
Document Type and Number:
Japanese Patent JP7457739
Kind Code:
B2
Abstract:
An object of the present invention is to provide a polarizing element which has an excellent antireflection function in a case of being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element of an embodiment of the present invention is a polarizing element having an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which the alignment film is a photoalignment film formed using a composition for forming a photoalignment film, including a photoactive compound having a polymerizable group and a photoreactive group, a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.
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Inventors:
Yasukazu Kuwayama
Atsushi Takeda
Naoki Koito
Atsushi Takeda
Naoki Koito
Application Number:
JP2022021453A
Publication Date:
March 28, 2024
Filing Date:
February 15, 2022
Export Citation:
Assignee:
Fujifilm Corporation
International Classes:
G02B5/30; C09B33/12; C09B35/033; C09B67/20; C09B69/10; C09K19/38; C09K19/60; G09F9/00
Domestic Patent References:
| JP2004528603A | ||||
| JP2016014794A | ||||
| JP2001198238A |
Foreign References:
| WO2018016360A1 | ||||
| WO2011024890A1 | ||||
| WO2011024892A1 | ||||
| WO2017069252A1 | ||||
| US20060147810 |
Attorney, Agent or Firm:
Hideaki Ito
Fumio Mihashi
Fumio Mihashi