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公开(公告)号：US11584853B2
公开(公告)日：2023-02-21
申请号：US17469034
申请日：2021-09-08
申请人： DIC Corporation
发明人： Kento Kawakita , Kenta Tojo , Ayaki Hosono
摘要： Provided are a compound represented by the following general formula (1) and a liquid crystal composition containing the compound, and a liquid crystal display device or a light control device having the liquid crystal composition. The compound represented by general formula (1) has both a large dichroic ratio and high solubility in the host liquid crystal. In addition, it has excellent chemical stability at a level usable as a device. Therefore, by using the compound represented by general formula (1) as a component of a GH-type liquid crystal composition, it is possible to provide a liquid crystal display device or a light control device with high contrast.
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公开(公告)号：US20230287272A1
公开(公告)日：2023-09-14
申请号：US18177762
申请日：2023-03-03
申请人： DIC Corporation
发明人： Yuichi Inoue , Kenta Tojo , Naomi Hatano , Kento Kawakita
IPC分类号： C09K19/60 , G02F1/00 , G02F1/1343
CPC分类号： C09K19/601 , G02F1/0045 , G02F1/1343
摘要： The disclosure provides a liquid crystal device including a liquid crystal composition containing a dichroic dye (dye-containing liquid crystal composition) that is in a light transmissive state when no voltage is applied to the transparent electrode and in a light scattering state when voltage is applied. The liquid crystal composition exhibits a negative dielectric constant anisotropy. The haze value of the liquid crystal device is 10% or less when no voltage is applied at 25° C., and the haze value is 50% or more when a rectangular wave voltage (AC 50 V, 60 Hz) is applied. The voltage holding ratio of the dye-containing liquid crystal composition is 60% or less at 25° C. The liquid crystal device provided by the disclosure is used as a component to provide a liquid crystal display apparatus, a light control apparatus, or a light transmitting apparatus with a high contrast.
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公开(公告)号：US20220073750A1
公开(公告)日：2022-03-10
申请号：US17469034
申请日：2021-09-08
申请人： DIC Corporation
发明人： Kento Kawakita , Kenta Tojo , Ayaki Hosono
摘要： Provided are a compound represented by the following general formula (1) and a liquid crystal composition containing the compound, and a liquid crystal display device or a light control device having the liquid crystal composition. The compound represented by general formula (1) has both a large dichroic ratio and high solubility in the host liquid crystal. In addition, it has excellent chemical stability at a level usable as a device. Therefore, by using the compound represented by general formula (1) as a component of a GH-type liquid crystal composition, it is possible to provide a liquid crystal display device or a light control device with high contrast.
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