公开(公告)号：US20190093014A1

公开(公告)日：2019-03-28

申请号：US16081937

申请日：2017-02-23

Applicant: ZEON CORPORATION

Inventor： Akira IKEDA ,  Shunpei NAKAJIMA ,  Masaya MIYAMURA ,  Yuki TAMURA

IPC: C09K19/38 ,  G02F1/13363 ,  G02F1/1333

Abstract: A liquid crystal composition including a polymerizable liquid crystal compound capable of expressing birefringence with reverse wavelength distribution and a surfactant containing a fluorine atom, a 1-octanol/water partition coefficient of the surfactant being less than 5.0.

公开(公告)号：US20180275329A1

公开(公告)日：2018-09-27

申请号：US15762215

申请日：2016-09-14

Applicant: ZEON CORPORATION

Inventor： Akira IKEDA ,  Masakazu SAITO

IPC: G02B5/30 ,  B29D11/00 ,  C09K19/34

CPC classification number: G02B5/3016 ,  B29D11/0073 ,  B29D11/00788 ,  B29D11/00865 ,  B29K2995/0041 ,  B32B7/02 ,  C09K19/3497 ,  C09K19/52 ,  C09K2019/0448 ,  C09K2019/528

Abstract: An optical film including a layer of a cured product obtained by curing a liquid crystal composition containing a polymerizable liquid crystal compound and a fluorine atom-containing surfactant, wherein the layer has a first surface, and a second surface opposite to the first surface, a surface fluorine atom amount measured by an X-ray photoelectron spectroscopy on the first surface is less than 25% by mole, and a ratio by mole of the surface fluorine atom amount measured by the X-ray photoelectron spectroscopy on the second surface relative to the surface fluorine atom amount measured by the X-ray photoelectron spectroscopy on the first surface is 0.5 or less.

公开(公告)号：US20180120487A1

公开(公告)日：2018-05-03

申请号：US15567995

申请日：2016-04-12

Applicant: ZEON CORPORATION

Inventor： Akira IKEDA ,  Masakazu SAITO

IPC: G02B5/30 ,  B05D1/26 ,  B05D3/06 ,  B05D5/06

CPC classification number: G02B5/3016 ,  B05D1/265 ,  B05D3/067 ,  B05D5/06 ,  B05D7/24 ,  B32B7/02 ,  B32B27/00 ,  C08J7/047 ,  C08J2355/00 ,  C08J2433/14 ,  G02B5/30 ,  H01L51/50 ,  H05B33/02 ,  Y10T428/10 ,  Y10T428/1036

Abstract: A method for producing a multilayer film including a substrate and an optically anisotropic layer, the method comprising; a step of coating a surface of the substrate with a liquid crystal composition containing a polymerizable liquid crystal compound capable of expressing an inverse wavelength dispersion birefringence to form a layer of the liquid crystal composition; and a step of polymerizing the polymerizable liquid crystal compound contained in the layer of the liquid crystal composition to obtain an optically anisotropic layer, wherein the surface of the substrate has a surface free energy of 50 mN/m or less, and the liquid crystal composition has a surface tension of 26 mN/m or more.

公开(公告)号：US20200024520A1

公开(公告)日：2020-01-23

申请号：US16495235

申请日：2018-03-08

Applicant: ZEON CORPORATION

Inventor： Shunpei NAKAJIMA ,  Natsumi FUJIWARA ,  Akira IKEDA

IPC: C09K19/38 ,  G02B5/30

Abstract: A liquid crystal composition including a liquid crystal compound capable of expressing a birefringence with reverse wavelength distribution, a (meth)acrylic acid ester compound other than the liquid crystal compound, and a surfactant containing a fluorine atom, wherein a ratio Mw/Np of a molecular weight Mw of the (meth)acrylic acid ester compound relative to a number of π electrons Np of the (meth)acrylic acid ester compound is 17 or more and 70 or less, and an amount of the surfactant relative to 100 parts by weight of a total of the liquid crystal compound and the (meth)acrylic acid ester compound is 0.11 part by weight or more and 0.29 part by weight or less.

公开(公告)号：US20200012156A1

公开(公告)日：2020-01-09

申请号：US16493038

申请日：2018-03-08

Applicant: ZEON CORPORATION

Inventor： Natsumi FUJIWARA ,  Shunpei NAKAJIMA ,  Akira IKEDA

IPC: G02F1/13363 ,  C09K19/02 ,  G02F1/1337

Abstract: A method for producing a liquid crystal cured film including a liquid crystal cured layer formed of a cured product of a liquid crystal composition including a liquid crystal compound capable of expressing a birefringence with reverse wavelength distribution and a polymerization initiator, the method including: a step of forming a layer of the liquid crystal composition; a step of giving orientation to the liquid crystal compound contained in the layer of the liquid crystal composition; and a step of curing the layer of the liquid crystal composition, wherein a residue content viscosity of a test composition is 800 cP or less under a condition of a temperature that is the same as a temperature of the layer in the step of giving orientation to the liquid crystal compound, the test composition being the liquid crystal composition from which the polymerization initiator is omitted.

公开(公告)号：US20190071604A1

公开(公告)日：2019-03-07

申请号：US16084692

申请日：2017-03-09

Applicant: ZEON CORPORATION

Inventor： Shunpei NAKAJIMA ,  Akira IKEDA ,  Manabu ITO

IPC: C09K19/04 ,  C09K19/54 ,  G02F1/13363 ,  G02F1/1335

Abstract: A liquid crystal cured film includes a liquid crystal cured layer formed of a cured product of a liquid crystal composition containing a polymerizable liquid crystal compound capable of expressing birefringence with reverse wavelength distribution, the polymerizable liquid crystal compound containing an ethylenically unsaturated bond and an aromatic ring. The film satisfies 1.00

公开(公告)号：US20220357585A1

公开(公告)日：2022-11-10

申请号：US17753822

申请日：2020-09-15

Applicant: ZEON CORPORATION

Inventor： Akira IKEDA

IPC: G02B27/28

Abstract: A display medium comprises a substrate having first and second surfaces, and a reflective layer on at least one of the first and second surfaces. The substrate includes a polarized light separation layer capable of reflecting circularly polarized light having one rotation direction DA and transmitting circularly polarized light having an opposite rotation direction to the rotation direction DA therethrough. The reflective layer contains first and second reflective pigments capable of reflecting circularly polarized light having rotation directions DBR and DBL, respectively, and transmitting circularly polarized light having opposite rotation directions to the rotation directions DBR and DBL, respectively, therethrough. The rotation directions DBR and DBL of the circularly polarized light that the first and second reflective pigments, respectively, can reflect are opposite to each other. Hues of the circularly polarized light that the first and second reflective pigments can reflect are differ from each other.

公开(公告)号：US20220244595A1

公开(公告)日：2022-08-04

申请号：US17597099

申请日：2020-07-02

Applicant: ZEON CORPORATION

Inventor： Akira IKEDA

IPC: G02F1/1335

Abstract: A display medium comprising: a multilayered substrate including a polarized light separation layer and a phase difference layer; and a first reflective layer provided on a surface of the multilayered substrate on a side with the polarized light separation layer, wherein: the polarized light separation layer can reflect circularly polarized light which has one rotation direction DA, and can transmit circularly polarized light which has an opposite rotation direction to the rotation direction DA; the first reflective layer can reflect circularly polarized light which has one rotation direction DB1, and can transmit circularly polarized light which has an opposite rotation direction to the rotation direction DB1; and the rotation direction DA of the circularly polarized light that the polarized light separation layer can reflect and the rotation direction DB1 of the circularly polarized light that the first reflective layer can reflect are the same as each other.

公开(公告)号：US20190225884A1

公开(公告)日：2019-07-25

申请号：US16061020

申请日：2016-12-14

Applicant: ZEON CORPORATION

Inventor： Shunpei NAKAJIMA ,  Akira IKEDA ,  Masakazu SAITO ,  Manabu ITO

IPC: C09K19/38 ,  C08F222/24 ,  G02B5/30

Abstract: A liquid crystal composition including: a polymerizable liquid crystal compound capable of expressing birefringence with inverse wavelength dispersion; and a (meth)acrylate compound containing two or more (meth)acryloyl groups per one molecule, wherein: an amount of the (meth)acrylate compound is 8 parts by weight or less, the amount being relative to 100 parts by weight of a sum total of the polymerizable liquid crystal compound and the (meth)acrylate compound.

公开(公告)号：US20180072952A1

公开(公告)日：2018-03-15

申请号：US15558196

申请日：2016-03-11

Applicant: ZEON CORPORATION

Inventor： Akira IKEDA ,  Hiroaki SHU ,  Shunpei NAKAJIMA

IPC: C09K19/54 ,  C09K19/20 ,  C09K19/32 ,  C09K19/34 ,  G02B5/30

Abstract: A liquid crystal composition including: a polymerizable liquid crystal compound capable of expressing birefringence with inverse wavelength dispersion; a surfactant containing a fluorine atom; and a solvent, wherein the surfactant contains a fluorine atom at a ratio of 30% by weight or less in a molecule of the surfactant.