Invention Grant
- Patent Title: Polarizing element, circularly polarizing plate, and image display device
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Application No.: US17853282Application Date: 2022-06-29
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Publication No.: US11822108B2Publication Date: 2023-11-21
- Inventor: Yasukazu Kuwayama , Fumitake Mitobe , Yuzo Fujiki , Jun Takeda
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Edwards Neils LLC
- Agent Jean C. Edwards, Esq.
- Priority: JP 17077162 2017.04.07 JP 17119097 2017.06.16
- Main IPC: G02B5/30
- IPC: G02B5/30

Abstract:
The present invention provides a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has a polarizing element. The polarizing element has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 or more and less than 1.78, an in-plane refractive index anisotropy Δn at a wavelength of 550 nm of the alignment film is less than 0.10.
Public/Granted literature
- US20220334299A1 POLARIZING ELEMENT, CIRCULARLY POLARIZING PLATE, AND IMAGE DISPLAY DEVICE Public/Granted day:2022-10-20
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