公开(公告)号：US20150069296A1

公开(公告)日：2015-03-12

申请号：US14366562

申请日：2012-12-18

Applicant: DIC Corporation

Inventor： Takeshi Kuriyama ,  Go Sudo ,  Shinichi Hirata ,  Shotaro Kawakami

IPC: C09K19/56 ,  C09K19/30

CPC classification number: C09K19/56 ,  C09K19/3066 ,  C09K19/44 ,  C09K2019/0448 ,  C09K2019/122 ,  C09K2019/123 ,  C09K2019/3027 ,  G02F2001/13712

Abstract: A liquid crystal composition of the present invention is used for a liquid crystal display device of an active matrix driving method, which requires fast response. The liquid crystal composition has negative dielectric anisotropy and a large absolute value thereof, and low viscosity. The liquid crystal composition is chemically stable to heat, light, water, and the like, and is suitable as a liquid crystal composition capable of low-voltage driving and practicable and having high reliability. A liquid crystal display device using the liquid crystal composition can be preferably used for a liquid crystal display device of a VA mode, a PASV mode, a PSA mode, or the like.

Abstract translation: 本发明的液晶组合物用于需要快速响应的有源矩阵驱动方法的液晶显示装置。 液晶组合物具有负的介电各向异性，绝对值大，粘度低。 液晶组合物对于热，光，水等具有化学稳定性，并且适合作为能够低电压驱动并且具有高可靠性的液晶组合物。 可以优选使用液晶组合物的液晶显示装置用于VA模式，PASV模式，PSA模式等的液晶显示装置。

公开(公告)号：US10934488B2

公开(公告)日：2021-03-02

申请号：US16381455

申请日：2019-04-11

Applicant: DIC CORPORATION

Inventor： Go Sudo ,  Shotaro Kawakami

IPC: G02F1/1333 ,  C09K19/54 ,  G02F1/1337 ,  C09K19/12 ,  C09K19/30 ,  C09K19/56 ,  C09K19/02 ,  G02F1/1362 ,  C09K19/04

Abstract: A polymerizable compound-containing liquid crystal composition of the present invention relates to a liquid crystal composition containing a polymerizable compound represented by general formula (I) and a compound represented by general formula (II) and can be used for a liquid crystal display device imparted with liquid crystal aligning ability by polymerization. The polymerizable liquid crystal composition is required to cause no precipitation in a wide temperature range and have a low viscosity corresponding to fast switching, and a liquid crystal display device using the composition is required to have more stable alignment after polymerization and to cause no defect in display characteristics. In the present invention, the problems can be solved using a specified compound.

公开(公告)号：US20190119573A1

公开(公告)日：2019-04-25

申请号：US16096410

申请日：2017-05-25

Applicant: DIC Corporation

Inventor： Go Sudo ,  Makoto Negishi

IPC: C09K19/30

Abstract: The present inventors have completed the present invention by examining various liquid crystal compounds and various chemical substances and finding that particular liquid crystal compounds can he combined to achieve the object. The composition contains compounds represented by the general formulae (i) to (vi). The liquid crystal display device contains the composition.

公开(公告)号：US10106740B2

公开(公告)日：2018-10-23

申请号：US14651001

申请日：2013-11-29

Applicant: DIC CORPORATION

Inventor： Go Sudo ,  Shotaro Kawakami

IPC: G02F1/1333 ,  C09K19/30 ,  C09K19/54 ,  C09K19/02 ,  C09K19/20 ,  C09K19/04 ,  C09K19/12

Abstract: There is provided a liquid crystal composition having a dielectric anisotropy (Δε) large in absolute value, a sufficiently low viscosity (η), a sufficiently low rotational viscosity (γ1), and a high elastic constant (K33) without decreased refractive index anisotropy (Δn) or nematic phase-isotropic liquid phase transition temperature (Tni). A liquid crystal display device, such as a VA mode liquid crystal display device, including the liquid crystal composition has high response speed and good display quality with few or no display defects. The liquid crystal display device including the liquid crystal composition is useful as an active-matrix liquid crystal display device and is applicable as a liquid crystal display device such as a VA mode or PSVA mode liquid crystal display device.

公开(公告)号：US10040997B2

公开(公告)日：2018-08-07

申请号：US14915309

申请日：2014-09-04

Applicant: DIC CORPORATION

Inventor： Shinichi Hirata ,  Go Sudo ,  Shotaro Kawakami

IPC: C09K19/20 ,  C09K19/32 ,  C09K19/30 ,  C09K19/44 ,  C07C69/604 ,  C07C69/753 ,  C07C69/88 ,  C07D213/79 ,  C07D303/40 ,  C07D305/06 ,  C09K19/54 ,  C09K19/04 ,  C09K19/12

Abstract: A nematic liquid crystal composition having negative dielectric anisotropy (Δε), and a liquid crystal device element including the liquid crystal composition. The liquid crystal composition has sufficiently low viscosity (η), sufficiently low rotational viscosity (γ1), a large elastic constant (K33), and a negative dielectric anisotropy (Δε) whose absolute value is large, without reducing the refractive index anisotropy (Δn) or the nematic-isotropic liquid phase transition temperature (Tni). A VA-mode liquid crystal display element including the liquid crystal composition, the liquid crystal display element having no or minimal display defects and having excellent display quality and a fast response. The liquid crystal display element including the liquid crystal composition is useful for an active matrix-addressed liquid crystal display element and used for, for example, a VA- or PSVA-mode liquid crystal display element.

公开(公告)号：US09879181B2

公开(公告)日：2018-01-30

申请号：US14517077

申请日：2014-10-17

Applicant: DIC CORPORATION

Inventor： Go Sudo ,  Shotaro Kawakami

IPC: C09K19/12 ,  C09K19/30 ,  C09K19/44 ,  C09K19/04

CPC classification number: C09K19/3066 ,  C09K19/12 ,  C09K19/44 ,  C09K2019/0448 ,  C09K2019/122 ,  C09K2019/123 ,  C09K2019/3004 ,  C09K2019/3009 ,  C09K2019/301 ,  C09K2019/3013 ,  C09K2019/3016 ,  C09K2019/3027 ,  C09K2019/303 ,  C09K2019/3036 ,  C09K2019/305 ,  Y10T428/10

Abstract: A nematic liquid crystal composition according to the invention is used for a liquid crystal display element for an active matrix drive for TV applications or the like for which a high speed and a wide viewing angle are required. The liquid crystal composition has a negative dielectric anisotropy having a large absolute value and also has a sufficiently low viscosity. Therefore, the liquid crystal composition has excellent characteristic properties, that is, a high speed response, good display quality and a suppressed display defect, and is therefore suitable as a practical liquid crystal composition. Further, a liquid crystal display element produced using the liquid crystal composition can be used favorably as a liquid crystal display element of a VA type or the like.

公开(公告)号：US20170327742A1

公开(公告)日：2017-11-16

申请号：US15525723

申请日：2015-12-10

Applicant: DIC Corporation

Inventor： Go Sudo ,  Marina Goto

IPC: C09K19/12 ,  G02F1/00 ,  C09K19/38 ,  C09K19/04 ,  C09K19/30

CPC classification number: C09K19/12 ,  C08F120/10 ,  C08K5/00 ,  C08L33/04 ,  C08L63/00 ,  C08L101/02 ,  C09K19/2014 ,  C09K19/30 ,  C09K19/3003 ,  C09K19/322 ,  C09K19/38 ,  C09K19/3852 ,  C09K19/388 ,  C09K19/54 ,  C09K2019/0448 ,  C09K2019/0466 ,  C09K2019/122 ,  C09K2019/123 ,  C09K2019/3004 ,  C09K2019/3009 ,  C09K2019/301 ,  C09K2019/3013 ,  C09K2019/3019 ,  C09K2019/3027 ,  C09K2019/303 ,  C09K2019/3036 ,  C09K2019/305 ,  C09K2019/3422 ,  G02F1/0045 ,  G02F1/13 ,  G02F1/1337

Abstract: There is provided a liquid crystal composition that exhibits a sufficiently low viscosity (η), a sufficiently low rotational viscosity (γ1), and a large elastic modulus (K33) without decreasing the refractive index anisotropy (Δn) and the nematic phase-isotropic liquid phase transition temperature (Tni) and without increasing the solid phase-nematic phase transition temperature (Tcn). The liquid crystal display element that uses this liquid crystal composition satisfactorily obtains a pretilt angle and has a high voltage holding ratio (VHR) and high-speed response. Thus, a liquid crystal display element that has no or less alignment defects and display defects such as image sticking, and has high display quality and high response speed is obtained.

公开(公告)号：US20170218271A1

公开(公告)日：2017-08-03

申请号：US15328695

申请日：2015-07-14

Applicant: DIC Corporation

Inventor： Shinichi Hirata ,  Go Sudo

IPC: C09K19/32 ,  C09K19/54 ,  G02F1/13 ,  C09K19/30

CPC classification number: C09K19/322 ,  C09K19/12 ,  C09K19/14 ,  C09K19/16 ,  C09K19/18 ,  C09K19/20 ,  C09K19/24 ,  C09K19/30 ,  C09K19/3066 ,  C09K19/32 ,  C09K19/34 ,  C09K19/38 ,  C09K19/42 ,  C09K19/542 ,  C09K2019/548 ,  G02F1/13 ,  G02F1/1309 ,  G02F1/1341

Abstract: There is provided a liquid crystal composition containing at least one compound represented by General Formula (a). There is also provided a liquid crystal display device using such a liquid crystal composition. The liquid crystal composition of the present invention has the following properties without suffering reductions in refractive index anisotropy (Δn) and nematic phase-isotropic liquid phase transition temperature (Tni): sufficiently low viscosity (η), sufficiently low rotational viscosity (γ1), a large elastic constant (K33), a high voltage holding ratio after UV exposure (VHR (UV)), and a negative dielectric anisotropy (Δ∈) with a large absolute value. A liquid crystal display device of, for example, a VA type that uses such a liquid crystal composition has a high response speed and excellent display quality with defective display being eliminated or reduced.

公开(公告)号：US09683173B2

公开(公告)日：2017-06-20

申请号：US14366562

申请日：2012-12-18

Applicant: DIC Corporation

Inventor： Takeshi Kuriyama ,  Go Sudo ,  Shinichi Hirata ,  Shotaro Kawakami

IPC: G02F1/1333 ,  C09K19/56 ,  C09K19/30 ,  C09K19/44 ,  C09K19/12 ,  G02F1/137 ,  C09K19/04

CPC classification number: C09K19/56 ,  C09K19/3066 ,  C09K19/44 ,  C09K2019/0448 ,  C09K2019/122 ,  C09K2019/123 ,  C09K2019/3027 ,  G02F2001/13712

Abstract: A liquid crystal composition of the present invention is used for a liquid crystal display device of an active matrix driving method, which requires fast response. The liquid crystal composition has negative dielectric anisotropy and a large absolute value thereof, and low viscosity. The liquid crystal composition is chemically stable to heat, light, water, and the like, and is suitable as a liquid crystal composition capable of low-voltage driving and practicable and having high reliability. A liquid crystal display device using the liquid crystal composition can be preferably used for a liquid crystal display device of a VA mode, a PASV mode, a PSA mode, or the like.

公开(公告)号：US09487704B2

公开(公告)日：2016-11-08

申请号：US14780909

申请日：2014-03-20

Applicant: DIC CORPORATION

Inventor： Go Sudo ,  Shotaro Kawakami

IPC: G02F1/1333 ,  C09K19/34 ,  C09K19/20 ,  C09K19/30 ,  C09K19/32 ,  C09K19/02 ,  C09K19/04

CPC classification number: C09K19/3402 ,  C09K19/0208 ,  C09K19/20 ,  C09K19/3066 ,  C09K19/322 ,  C09K2019/0466 ,  C09K2019/3004 ,  C09K2019/3422

Abstract: There is provided a positive liquid crystal composition that has a dielectric anisotropy useful as a liquid crystal display material. The liquid crystal composition has a liquid crystal phase in a wide temperature range, a low viscosity, a good solubility at low temperatures, a high resistivity, and a high voltage holding ratio, and is stable to heat and light. Use of this liquid crystal composition can provide a liquid crystal display element that has high displaying quality and is less likely to undergo displaying failures such as burn-in and dropping marks. A liquid crystal display element that employs the liquid crystal composition is useful for an active-matrix-driving liquid crystal display element and can be used for a liquid crystal display element that employs the TN mode, the IPS mode, the FFS mode, or the like.

Abstract translation: 提供具有作为液晶显示材料有用的介电各向异性的正极液晶组合物。 液晶组合物在宽温度范围内具有液晶相，低粘度，低温下的良好溶解性，高电阻率和高电压保持率，并且对于热和光是稳定的。 使用该液晶组合物可以提供具有高显示质量并且不太可能出现诸如老化和降落标记的显示故障的液晶显示元件。 采用液晶组合物的液晶显示元件对于有源矩阵驱动液晶显示元件是有用的，可用于采用TN模式，IPS模式，FFS模式或 喜欢。