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1.发明公开公开(公告)号：US20240294830A1
公开(公告)日：2024-09-05
申请号：US18515161
申请日：2023-11-20
发明人： Eiji OKABE , Takanori MORI , Kazushi SHIREN , Yuko KATANO
CPC分类号： C09K19/44 , C09K19/3003 , C09K19/3059 , C09K2019/3016 , C09K2019/306
摘要： A liquid crystal composition as a material used for elements for controlling electromagnetic wave signals in a frequency range of 1 GHz to 10 THz, and an element containing this composition are provided. In the liquid crystal composition, a characteristic balance is excellent, and at least one of characteristics of a wide temperature range of a nematic phase, a large refractive index anisotropy in a frequency region used for control, and a small dielectric loss tangent (tan δ) is satisfied.
A liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) is provided.
For example, R1 is an alkyl having 1 to 12 carbon atoms; ring A1 is 1,4-phenylene; L11, L13, L14, L16, Y11, and Y12 are each hydrogen; L12 is fluorine; and L15 is methyl.-
公开(公告)号：US20180112131A1
公开(公告)日：2018-04-26
申请号：US15792761
申请日：2017-10-25
发明人： Hitoshi TOBATA , Eiji OKABE
CPC分类号： C09K19/3001 , C09K19/0403 , C09K19/12 , C09K19/18 , C09K19/20 , C09K19/3402 , C09K19/586 , C09K19/588 , C09K2019/0411 , C09K2019/0414 , C09K2019/0448 , C09K2019/0466 , C09K2019/124 , C09K2019/181 , C09K2019/183 , C09K2019/3019 , C09K2019/3025 , C09K2019/3422
摘要： Provided are a liquid-crystal-medium having stability to heat, light and so forth, a wide liquid-crystal-phase temperature-range and significantly large dielectric-anisotropy and developing an optically isotropic liquid-crystal-phase; and various optical-devices used in a wide temperature-range, having short response-time, a large contrast-ratio and low drive-voltage and suppressing decrease in an effective dielectric-constant in a high-frequency range.A Liquid-crystal composition contains achiral-component T containing at least one compound selected from a first component represented by formula (1) and at least one compound selected from a second component represented by formula (2) or (3) and a chiral-agent to develop optically-isotropic liquid-crystal-phase: In formula (1), R1: alkyl, ring A1: 1,4-cyclohexylene, ring B1: 1,4-phenylene, L11 to L14: fluorine, Y1: fluorine, n1: 1 or 2, R2: alkyl, Z21 and Z22: single-bond or —CF2O—, L21 to L23: fluorine, Y2: fluorine, R3: alkyl, Z31 and 232: single-bond or —CF2O—, L31 to L34: fluorine, Y3: fluorine, for example.
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3.发明申请公开(公告)号：US20200299581A1
公开(公告)日：2020-09-24
申请号：US16823350
申请日：2020-03-19
发明人： Eiji OKABE , HITOSHI TOBATA
IPC分类号： C09K19/34 , C09K19/58 , C09K19/56 , C09K19/02 , G02F1/1334
摘要： A device using a liquid crystal medium exhibiting an optically isotropic liquid crystal phase, particularly, a blue phase liquid crystal medium for polarized light control application, in which reduction of an effective dielectric constant in a high frequency region is suppressed. A liquid crystal composition contains achiral component T, and has a liquid crystal phase optically exhibiting isotropy, in which achiral component T contains at least one compound selected from the group of compounds represented by formula (1) as a first component, at least one compound selected from the group of compounds represented by formula (2) and formula (3) as a second component, and is used for optical switching for controlling retardation by electric field-induced birefringence.
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公开(公告)号：US20190316036A1
公开(公告)日：2019-10-17
申请号：US16313467
申请日：2017-06-22
发明人： Hitoshi TOBATA , Eiji OKABE
IPC分类号： C09K19/34 , C09K19/58 , C09K19/54 , G02F1/1343 , G02F1/1333
摘要： A liquid crystal composition that contains achiral component T including at least one compound selected from the group of compounds represented by formula (1) and at least one compound selected from the group of compounds represented by formula (2), and a chiral agent to develop an optically isotropic liquid crystal phase. In formulas (1) and (2), R1 and R2 are independently alkoxyalkyl; Z11, Z12, Z21 and Z22 are independently a single bond; L11 to L13, L21 and L22 are independently fluorine; and Y1 and Y2 are independently fluorine, for example.
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公开(公告)号：US20170362507A1
公开(公告)日：2017-12-21
申请号：US15592197
申请日：2017-05-11
发明人： Eiji OKABE
CPC分类号： C09K19/3491 , C09K19/20 , C09K19/3066 , C09K2019/0466 , C09K2019/123 , C09K2019/181 , C09K2019/3019 , C09K2019/304 , C09K2019/3422 , G02F1/29
摘要： Shown is a liquid crystal composition satisfying at least one or having suitable balance regarding at least two of characteristics such as high maximum or low minimum temperature of a nematic phase, large optical anisotropy, large positive dielectric anisotropy and high stability to ultraviolet light, a liquid crystal display device including such a composition, particularly including an encapsulated composition, and a liquid crystal display device including the composition serving as a constituent of 3D lens. The liquid crystal composition contains a specific compound having large optical anisotropy as a first component, and a specific compound having large optical anisotropy and positive dielectric anisotropy as a second component; a specific compound having large positive dielectric anisotropy as a third component; and a specific compound having large optical anisotropy and further having high maximum or low minimum temperature as a fourth component, and the liquid crystal display device includes the composition.
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公开(公告)号：US20240271041A1
公开(公告)日：2024-08-15
申请号：US18631063
申请日：2024-04-10
发明人： Eiji OKABE , Takanori MORI , Kazushi SHIREN , Yuko KATANO
CPC分类号： C09K19/18 , C09K19/12 , G02B1/02 , G02B1/041 , G02B3/12 , G02F1/1392 , C09K2019/122 , C09K2019/181 , C09K2019/183 , C09K2019/186 , C09K2019/188
摘要： A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan δ) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a and c are respectively 0 or 1, b is 1, and a sum of a, b, and c is 2.
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7.发明申请公开(公告)号：US20220119710A1
公开(公告)日：2022-04-21
申请号：US17373802
申请日：2021-07-13
发明人： Eiji OKABE , Takanori MORI , Yuko KATANO
摘要： A material used in an element for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz. A liquid crystal composition containing at least one compound selected from a group of compounds represented by Formula (1), at least one compound selected from a group of compounds represented by Formula (2) and at least one compound selected from a group of compounds represented by Formula (3). For example, R1, R21, R22, R31, and R32 are alkyls having 1 to 12 carbon atoms; a ring A1 is 1,4-phenylene; Z11, Z13, Z21, Z23, Z31, and Z33 are single bonds; Z12, Z22, and Z32 are —C≡C— or —C≡C—C≡C—; L13 to L16, L21 to L23, and L31 to L36 are hydrogen or fluorine; Y11 and Y12 are hydrogen or fluorine; and n1 is 0.
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公开(公告)号：US20170313940A1
公开(公告)日：2017-11-02
申请号：US15521303
申请日：2015-07-10
发明人： Eiji OKABE
CPC分类号： C09K19/3463 , C09K19/12 , C09K19/14 , C09K19/16 , C09K19/18 , C09K19/20 , C09K19/30 , C09K19/3003 , C09K19/3048 , C09K19/3059 , C09K19/34 , C09K19/3402 , C09K19/3461 , C09K19/42 , C09K2019/0466 , C09K2019/122 , C09K2019/123 , C09K2019/181 , C09K2019/183 , C09K2019/188 , C09K2019/3009 , C09K2019/3016 , C09K2019/3025 , C09K2019/3051 , C09K2019/3063 , C09K2019/3422 , G02B27/2214 , G02F1/13
摘要： Provided is a liquid crystal composition satisfying at least one or having suitable balance regarding at least two of characteristics such as high maximum or low minimum temperature of a nematic phase, large optical anisotropy, large positive dielectric anisotropy and high stability to ultraviolet light, and a liquid crystal display device including such a composition, particularly an encapsulated liquid crystal display device, and a liquid crystal display device serving as a constituent of 3D lenses. The liquid crystal composition contains a specific compound having large optical anisotropy as a first component, and a specific compound having large optical anisotropy and large positive dielectric anisotropy as a second component; a specific compound having large positive dielectric anisotropy as a third component; and a specific compound having large optical anisotropy and further having high maximum or low minimum temperature as a fourth component, and the liquid crystal display device includes the composition.
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公开(公告)号：US20230265343A1
公开(公告)日：2023-08-24
申请号：US18167072
申请日：2023-02-10
发明人： Eiji OKABE , Takanori MORI , Kazushi SHIREN , Yuko KATANO
CPC分类号： C09K19/18 , C09K19/12 , G02B1/02 , G02B1/041 , G02B3/12 , G02F1/1392 , C09K2019/122 , C09K2019/181 , C09K2019/183 , C09K2019/186 , C09K2019/188
摘要： A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan δ) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a, b, and c are respectively 0, 1, and 0.
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10.发明申请公开(公告)号：US20220081618A1
公开(公告)日：2022-03-17
申请号：US17468712
申请日：2021-09-08
发明人： Takanori MORI , Yoichi URIU , Eiji OKABE , Hitoshi TOBATA
摘要： As a material used in an element used for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz, a liquid crystal composition is required, which has a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, large dielectric anisotropy and a small tan δ in a frequency region where the phase control of an electromagnetic wave signal is performed, and stability against heat, and which has an excellent balance of the characteristics. A liquid crystal composition which is used in an element for phase control of an electromagnetic wave signal having any frequency from 1 GHz to 10 THz, the liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) as a first component.
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