Invention Grant
- Patent Title: Liquid crystal light control element
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Application No.: US17765961Application Date: 2020-09-29
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Publication No.: US11966120B2Publication Date: 2024-04-23
- Inventor: Kanako Suzuki , Masaaki Katayama , Masafumi Takahashi , Kazuyoshi Hosaka
- Applicant: Nissan Chemical Corporation
- Applicant Address: JP Chuo-ku
- Assignee: Nissan Chemical Corporation
- Current Assignee: Nissan Chemical Corporation
- Current Assignee Address: JP Chuo-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP 19182234 2019.10.02
- International Application: PCT/JP2020/036980 2020.09.29
- International Announcement: WO2021/065933A 2021.04.08
- Date entered country: 2022-05-16
- Main IPC: G02F1/1337
- IPC: G02F1/1337 ; C08G73/10 ; C09K19/56 ; C09K19/60 ; G02F1/137

Abstract:
A liquid crystal light control element that controls a light absorption state by voltage application, the liquid crystal light control element including: a liquid crystal layer containing a liquid crystal composition between a pair of substrates each having an electrode; and a liquid crystal alignment film that is provided on at least one of the substrates and aligns a liquid crystal vertically,
wherein the liquid crystal composition contains a liquid crystal and a dichroic dye,
the liquid crystal alignment film is obtained from a liquid crystal aligning agent containing a polyimide precursor in which a diamine having a specific side chain is used as a part of the raw material or a polyimide obtained by imidizing the polyimide precursor, and
the proportion of the diamine used is 50 to 100 mol % based on the entire diamine component.
wherein the liquid crystal composition contains a liquid crystal and a dichroic dye,
the liquid crystal alignment film is obtained from a liquid crystal aligning agent containing a polyimide precursor in which a diamine having a specific side chain is used as a part of the raw material or a polyimide obtained by imidizing the polyimide precursor, and
the proportion of the diamine used is 50 to 100 mol % based on the entire diamine component.
Public/Granted literature
- US20230028353A1 LIQUID CRYSTAL LIGHT CONTROL ELEMENT Public/Granted day:2023-01-26
Information query
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