公开(公告)号：US20220145108A1

公开(公告)日：2022-05-12

申请号：US17605059

申请日：2020-05-13

Applicant: DIC Corporation

Inventor： Koichi Endo ,  Yasuo Umezu ,  Yoshio Aoki ,  Shinichi Hirata ,  Takuo Hayashi ,  Masahiro Horiguchi ,  Misao Horigome ,  Jianjun Yuan

IPC: C09D11/322 ,  H05B33/14 ,  C08F2/50 ,  C09K11/06

Abstract: Provided are light-emitting particles having high stability while having perovskite-type semiconductor nanocrystals having excellent light-emitting properties, a method for producing the same, and a light-emitting particle dispersion, an ink composition, and a light-emitting element containing such light-emitting particles. The method for producing light-emitting particles of the present invention includes a step of preparing parent particles 91 composed of perovskite-type semiconductor nanocrystals 911 having light-emitting properties and a surface layer 912 which is composed of ligands coordinated on the surface of the semiconductor nanocrystal 911 and in which the ligand molecules form a siloxane bond with each other, and a step of forming a polymer layer 93 by coating the surface of the parent particle 91 with a hydrophobic polymer.

公开(公告)号：US20170029698A1

公开(公告)日：2017-02-02

申请号：US15106448

申请日：2014-12-17

Applicant: DIC Corporation

Inventor： Go Sudo ,  Yasuo Umezu

IPC: C09K15/08 ,  G02F1/1368 ,  C07C39/16 ,  G02F1/1343 ,  C09K19/32 ,  C09K19/54

CPC classification number: C09K15/08 ,  C07C39/16 ,  C09K19/2028 ,  C09K19/322 ,  C09K19/54 ,  C09K19/542 ,  C09K2019/0448 ,  C09K2019/0466 ,  C09K2019/548 ,  G02F1/13439 ,  G02F1/1368 ,  G02F2201/121 ,  G02F2201/123

Abstract: The present invention is to provide an antioxidant for liquid crystal composition which contains one or more kinds of liquid crystal compounds having a positive dielectric anisotropy of 4 or more as an absolute value at 3% or more and is represented by Formula (II-1) (in the Formula (II-1), My represents a hydrocarbon having from 1 to 25 carbon atoms, a 1,4-phenylene group, or a trans-1,4-cyclohexylene group, Xy represent an alkylene group having from 1 to 15 carbon atoms, —OCH2—, —CH2O—, —COO—, —OCO—, —CF2O—, —OCF2—, —CF2CF2—, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —CH═CH—, —C≡C—, a singlebond, a 1,4-phenylene group, or a trans-1,4-cyclohexylene group, and l represents an integer from 2 to 6), a liquid crystal composition containing the antioxidant, and a liquid crystal display device using the liquid crystal composition.

Abstract translation: （式（II-1）中，My表示碳原子数1〜25的烃，1,4-亚苯基或反式-1,4-亚环己基，Xy表示1〜 15个碳原子，-OCH 2 - ， - CH 2 O - ， - COO - ， - OCO-，-CF 2 O-，-OCF 2 - ， - CF 2 CF 2 - ， - CH = CH-COO-， - CH = CH-OCO-，-COO -CH = CH-，-OCO-CH = CH-，-CH = CH-，-C≡C-，单键，1,4-亚苯基或反式-1,4-亚环己基，l 表示2〜6的整数），含有抗氧化剂的液晶组合物和使用该液晶组合物的液晶显示装置。

公开(公告)号：US20220195290A1

公开(公告)日：2022-06-23

申请号：US17605066

申请日：2020-05-15

Applicant: DIC Corporation

Inventor： Yoshio Aoki ,  Yasuo Umezu ,  Koichi Endo ,  Shinichi Hirata ,  Takuo Hayashi ,  Masahiro Horiguchi ,  Misao Horigome ,  Jianjun Yuan

IPC: C09K11/02 ,  C09K11/66 ,  C09D11/50 ,  C09D11/037 ,  C09D11/101 ,  C09D11/107 ,  H01L27/32

Abstract: Provided are light-emitting particles having high stability while having perovskite-type semiconductor nanocrystals having excellent light-emitting properties, a method for producing the same, and a light-emitting particle dispersion, an ink composition, and a light-emitting element containing such light-emitting particles. The method for producing light-emitting particles of the present invention includes a step of preparing parent particles 91 each having hollow particles 912 each having an inner space 912a and pores 912b communicating with the inner space 912a, and perovskite-type semiconductor nanocrystals 911 contained in the inner space 912a and having light-emitting properties, and a step of coating the surface of each parent particle 91 with a hydrophobic polymer to form a polymer layer 92.

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。

公开(公告)号：US11049911B2

公开(公告)日：2021-06-29

申请号：US16465309

申请日：2017-12-21

Applicant: DIC Corporation

Inventor： Yasuo Umezu ,  Hidehiko Yamaguchi ,  Yoshio Aoki ,  Shinji Ogawa

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/52

Abstract: It is an object of the present invention to provide an image display apparatus capable of inhibiting or preventing the deterioration of a light conversion layer while high luminous efficiency and high color reproducibility are achieved. The present invention provides a light-emitting device including a pair of electrodes, an electroluminescent layer disposed between a first electrode and a second electrode, a light conversion layer including multiple pixels and converting light that is emitted from the electroluminescent layer and that has a blue emission spectrum into light having a different wavelength. The light conversion layer includes pixels of three primary colors of red (R), green (G), and blue (B) and contains a light-emitting nanocrystal having an emission spectrum in any of red (R), green (G), and blue (B) when light from the electroluminescent layer is incident on at least one of the three primary colors.

公开(公告)号：US20210139730A1

公开(公告)日：2021-05-13

申请号：US17133773

申请日：2020-12-24

Applicant: DIC CORPORATION

Inventor： Takeshi Isonaka ,  Yasuo Umezu ,  Hidehiko Yamaguchi ,  Yoshio Aoki ,  Hirotomo Sasaki ,  Sunao Yoshihara ,  Takayuki Miki ,  Aya Ishizuka ,  Takeo Kizaki

IPC: C09D11/38 ,  B41J2/21 ,  C09D11/40 ,  G02F1/1335 ,  G02B5/20

Abstract: A dispersion contains, as essential ingredients, light-emitting nanocrystals, a polymeric dispersant having an amine value of 5 mg/KOH g or more, and a stimulation-responsive curable material that cures in response to an external stimulus.

公开(公告)号：US20190393273A1

公开(公告)日：2019-12-26

申请号：US16465309

申请日：2017-12-21

Applicant: DIC Corporation

Inventor： Yasuo Umezu ,  Hidehiko Yamaguchi ,  Yoshio Aoki ,  Shinji Ogawa

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/52

Abstract: It is an object of the present invention to provide an image display apparatus capable of inhibiting or preventing the deterioration of a light conversion layer while high luminous efficiency and high color reproducibility are achieved. The present invention provides a light-emitting device including a pair of electrodes, an electroluminescent layer disposed between a first electrode and a second electrode, a light conversion layer including multiple pixels and converting light that is emitted from the electroluminescent layer and that has a blue emission spectrum into light having a different wavelength. The light conversion layer includes pixels of three primary colors of red (R), green (G), and blue (B) and contains a light-emitting nanocrystal having an emission spectrum in any of red (R), green (G), and blue (B) when light from the electroluminescent layer is incident on at least one of the three primary colors.

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：US20190390076A1

公开(公告)日：2019-12-26

申请号：US16474357

申请日：2017-12-21

Applicant: DIC Corporation

Inventor： Takeshi Isonaka ,  Yasuo Umezu ,  Hidehiko Yamaguchi ,  Yoshio Aoki ,  Hirotomo Sasaki ,  Sunao Yoshihara ,  Takayuki Miki ,  Aya Ishizuka ,  Takeo Kizaki

IPC: C09D11/38 ,  C09D11/40 ,  B41J2/21 ,  G02F1/1335

Abstract: A dispersion contains, as essential ingredients, light-emitting nanocrystals, a polymeric dispersant having an amine value of 5 mg/KOH g or more, and a stimulation-responsive curable material that cures in response to an external stimulus.

公开(公告)号：US10174254B2

公开(公告)日：2019-01-08

申请号：US15105807

申请日：2014-12-19

Applicant: DIC Corporation

Inventor： Go Sudo ,  Yasuo Umezu

IPC: C09K19/54 ,  C09K19/30 ,  C09K19/32 ,  C09K19/20 ,  G02F1/1343 ,  G02F1/1368 ,  C09K19/04 ,  C09K19/12

Abstract: The present invention relates to a liquid crystal composition, which is a liquid crystal composition containing a compound represented by General Formula (II-1) as an anti-oxidizing agent for a liquid crystal composition containing the compound represented by General Formula (II-1) and also as a first component, and a compound represented by General Formula (K) as a second component. The compound represented by General Formula (II-1) enables obtainment of a working effect of the anti-oxidizing agent, and therefore it allows provision of a liquid crystal composition containing the anti-oxidizing agent which has improved reliability like low temperature stability, while the high dielectric anisotropy is maintained.