公开(公告)号：US20160319192A1

公开(公告)日：2016-11-03

申请号：US15108859

申请日：2014-12-17

Applicant: DIC CORPORATION

Inventor： Shinichi Hirata ,  Tomoaki Hara ,  Naomi Hatano ,  Yasuo Umezu

IPC: C09K19/32 ,  G02F1/1335 ,  C09K19/38 ,  G02F1/1343 ,  C09K19/30 ,  C09K19/56

CPC classification number: C09K19/322 ,  C09K19/20 ,  C09K19/2028 ,  C09K19/3003 ,  C09K19/3028 ,  C09K19/3066 ,  C09K19/3809 ,  C09K19/42 ,  C09K19/56 ,  C09K2019/0448 ,  C09K2019/0466 ,  C09K2019/122 ,  C09K2019/123 ,  C09K2019/3004 ,  C09K2019/3009 ,  C09K2019/301 ,  C09K2019/3016 ,  C09K2019/3027 ,  C09K2019/3425 ,  G02F1/133528 ,  G02F1/13439 ,  G02F2001/13345

Abstract: There is provided a liquid crystal composition whose refractive index anisotropy (Δn) and nematic phase-isotropic liquid phase transition temperature (Tni) are sufficiently high, whose viscosity (η) is sufficiently low, whose rotational viscosity (γ1) is sufficiently low, whose elastic constant (K33) is high, whose dielectric anisotropy (Δ∈) is high or whose Δ∈ is negative with a large absolute value, and whose decrease in reliability after UV irradiation is small, and also provide a liquid crystal display element including the same, which has the excellent display quality and the high response speed. It has been found that the above object can be achieved by forming a polymerizable compound containing liquid crystal composition, which includes a polymerizable compound with a particular chemical structure and a non-polymerizable liquid crystal compound, the polymerizable compound with a particular chemical structure being contained at a particular ratio, and a liquid crystal display element including the same.

Abstract translation: 提供了一种液晶组合物，其折射率各向异性（Δn）和向列相各向同性液相转变温度（Tni）足够高，其粘度（η）足够低，其旋转粘度（γ1）足够低， 弹性常数（K33）高，其介电各向异性（Δε）高或Δε为负，绝对值大，UV照射后的可靠性降低较小，并且还提供了包括 相同，具有优异的显示质量和高响应速度。 已经发现，通过形成包含具有特定化学结构的可聚合化合物和非聚合性液晶化合物的含有液晶组合物的可聚合化合物，可以实现上述目的，含有特定化学结构的可聚合化合物 以及具有该特定比例的液晶显示元件。

公开(公告)号：US10093857B2

公开(公告)日：2018-10-09

申请号：US15027646

申请日：2014-03-27

Applicant: DIC Corporation

Inventor： Shinichi Hirata ,  Hyobok Cha ,  Naomi Hatano ,  Tomoaki Hara ,  Yasuo Umezu

IPC: G02F1/1333 ,  C09K19/32 ,  C09K19/12 ,  C09K19/20 ,  C09K19/30 ,  C09K19/02 ,  C09K19/04

Abstract: There is provided a liquid crystal composition having the following properties without reductions in refractive index anisotropy (Δn) and nematic phase-isotropic liquid phase transition temperature (Tni): sufficiently small viscosity (η), sufficiently small rotational viscosity (γ1), a large elastic constant (K33), and negative dielectric anisotropy (Δε) with a large absolute value. There is also provided a liquid crystal display device of, for example, a VA type in which such a liquid crystal composition is used and which has a high response speed and excellent display quality with defective display being eliminated or reduced. The liquid crystal display device using the liquid crystal composition of the present invention is useful as an active-matrix liquid crystal display device and can be used in liquid crystal display devices of, for instance, a VA mode and PSVA mode.

公开(公告)号：US20230287272A1

公开(公告)日：2023-09-14

申请号：US18177762

申请日：2023-03-03

Applicant: DIC Corporation

Inventor： Yuichi Inoue ,  Kenta Tojo ,  Naomi Hatano ,  Kento Kawakita

IPC: C09K19/60 ,  G02F1/00 ,  G02F1/1343

CPC classification number: C09K19/601 ,  G02F1/0045 ,  G02F1/1343

Abstract: 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.

公开(公告)号：US20160237349A1

公开(公告)日：2016-08-18

申请号：US15027646

申请日：2014-03-27

Applicant: DIC CORPORATION

Inventor： Shinichi Hirata ,  Hyobok Cha ,  Naomi Hatano ,  Tomoaki Hara ,  Yasuo Umezu

IPC: C09K19/32 ,  C09K19/02 ,  C09K19/30

CPC classification number: C09K19/322 ,  C09K19/0216 ,  C09K19/12 ,  C09K19/20 ,  C09K19/3003 ,  C09K19/3028 ,  C09K19/3066 ,  C09K2019/0407 ,  C09K2019/0448 ,  C09K2019/122 ,  C09K2019/123 ,  C09K2019/3004 ,  C09K2019/3009 ,  C09K2019/301 ,  C09K2019/3016 ,  C09K2019/3018 ,  C09K2019/3027 ,  C09K2019/3036 ,  C09K2019/3037

Abstract: There is provided a liquid crystal composition having the following properties without reductions in refractive index anisotropy (Δn) and nematic phase-isotropic liquid phase transition temperature (Tni): sufficiently small viscosity (η), sufficiently small rotational viscosity (γ1), a large elastic constant (K33), and negative dielectric anisotropy (Δ∈) with a large absolute value. There is also provided a liquid crystal display device of, for example, a VA type in which such a liquid crystal composition is used and which has a high response speed and excellent display quality with defective display being eliminated or reduced. The liquid crystal display device using the liquid crystal composition of the present invention is useful as an active-matrix liquid crystal display device and can be used in liquid crystal display devices of, for instance, a VA mode and PSVA mode.

Abstract translation: 提供具有以下性质的液晶组合物，其折射率各向异性（Δn）和向列相各向同性液相转变温度（Tni）不降低：足够小的粘度（η），足够小的旋转粘度（γ1），大的 弹性常数（K33）和负介电各向异性（Δε），绝对值大。 还提供了例如使用这种液晶组合物并且具有高响应速度和优异的显示质量的VA型液晶显示装置，其中不良显示被消除或减少。 使用本发明的液晶组合物的液晶显示装置可用作有源矩阵液晶显示装置，并且可以用于例如VA模式和PSVA模式的液晶显示装置中。