公开(公告)号：US20220177419A1

公开(公告)日：2022-06-09

申请号：US17651810

申请日：2022-02-21

Applicant: ZEON CORPORATION

Inventor： Masakazu SAITO ,  Kazuhiro OSATO ,  Masashi AIMATSU ,  Kei SAKAMOTO

IPC: C07C251/88 ,  B29D11/00 ,  C08F22/20 ,  C08F22/22 ,  C08F22/24 ,  C08J5/18 ,  G02B5/30 ,  C07D333/10 ,  C07D333/22

Abstract: A phase difference plate includes a phase difference plate P1 and a phase difference plate P2. An in-plane slow axis of the phase difference plate P1 is orthogonal to an in-plane slow axis of the phase difference plate P2. The phase difference plate P2 includes a layer of a liquid crystal material oriented in an in-plane direction. An in-plane retardation ReP2(λ) at a wavelength λ nm of the phase difference plate P2 satisfies the following formulae (e1) and (e2): {Re2(400)−Re2(550)}/{Re2(550)−Re2(700)} 1.13 (e2). An in-plane retardation ReP1(λ) of the phase difference plate P1 at a wavelength λ nm and the in-plane retardation ReP2(λ) of the phase difference plate P2 at the wavelength λ nm satisfy the following formulae (e4) and (e5): ReP1(550)>ReP2(550) (e4), and ReP1(400)/ReP1(700)

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：US20190079355A1

公开(公告)日：2019-03-14

申请号：US16085218

申请日：2017-03-27

Applicant: ZEON CORPORATION

Inventor： Kazuhiro OOSATO ,  Masashi AIMATSU ,  Masakazu SAITO

IPC: G02F1/13363 ,  G02B1/10 ,  G02B5/30 ,  G02F1/1335 ,  G06F3/044

Abstract: An optically anisotropic layered body including a first optically anisotropic layer and a second optically anisotropic layer, wherein in-plane retardations Re(H450), Re(H550), Re(H590), and Re(H650) of the first optically anisotropic layer at wavelengths of 450 nm, 550 nm, 590 nm, and 650 nm, respectively, and in-plane retardations Re(Q450), Re(Q550), Re(Q590), and Re(Q650) of the second optically anisotropic layer at wavelengths of 450 nm, 550 nm, 590 nm, and 650 nm, respectively, satisfy specific requirements.

公开(公告)号：US20180101069A1

公开(公告)日：2018-04-12

申请号：US15566862

申请日：2016-04-20

Applicant: ZEON CORPORATION

Inventor： Taku HATANO ,  Masakazu SAITO ,  Hiromasa HASHIMOTO

IPC: G02F1/13363 ,  G02F1/1335

CPC classification number: G02F1/133634 ,  G02B5/3016 ,  G02F1/133528 ,  G02F1/13363 ,  G02F2001/133633 ,  G02F2001/133638 ,  G02F2413/08 ,  G02F2413/13 ,  G02F2413/14 ,  H01L51/50 ,  H01L51/5293 ,  Y10T428/10 ,  Y10T428/1036

Abstract: A multilayer film including a first substrate and an optically anisotropic layer that is formed directly on the first substrate and contains cured liquid crystal molecules, wherein the first substrate has an orientation regulating force, and the first substrate has a tensile elastic modulus at 23° C. of 2,500 MPa or more.

公开(公告)号：US20170368793A1

公开(公告)日：2017-12-28

申请号：US15541479

申请日：2016-01-20

Applicant: ZEON CORPORATION

Inventor： Hiromasa HASHIMOTO ,  Masakazu SAITO

IPC: B32B7/02 ,  H01L51/52 ,  G02B5/30

CPC classification number: B32B7/02 ,  G02B5/3016 ,  G02F1/13363 ,  G02F2001/133638 ,  H01L51/5281 ,  H01L51/5293

Abstract: A multilayer film including: a first long-length substrate; and an optically anisotropic layer that is formed directly on the first substrate and contains cured liquid crystal molecules, wherein the first substrate has an Nz factor of 1.1 to 3.0, variation of orientation angle of 1.0° or less, and an orientation-regulating force caused by stretching, and an angle formed between a slow axis of the first substrate and a widthwise direction of the first substrate is 0° or more and less than 90°; and manufacturing method and use thereof.

公开(公告)号：US20190391433A1

公开(公告)日：2019-12-26

申请号：US16464764

申请日：2017-11-28

Applicant: ZEON CORPORATION

Inventor： Hiromasa HASHIMOTO ,  Masakazu SAITO

IPC: G02F1/13363 ,  G02B5/30 ,  H01L27/32 ,  H01L51/50 ,  G06F3/044 ,  G09F9/30 ,  G02F1/1335

Abstract: An optical layered body including a substrate layer, and an optically anisotropic layer containing at least one liquid crystal cured layer, wherein a light transmittance of the substrate layer at a wavelength of 390 nm is 1% or less, and an in-plane retardation Re0(450) at a wavelength 450 nm before the optical layered body is exposed to the xenon lamp, an in-plane retardation Re0(550) at a wavelength 550 nm before the optical layered body is exposed to the xenon lamp, an in-plane retardation Re300(450) at the wavelength 450 nm after the optical layered body was exposed to the xenon lamp for 300 hours, and an in-plane retardation Re300(550) at the wavelength 550 nm after the optical layered body was exposed to the xenon lamp for 300 hours satisfy the following formulae (1) and (2): 0.95≤Re300(450)/Re0(450)≤1.05  (1), 0.95≤Re300(550)/Re0(550)≤1.05  (2).

公开(公告)号：US20190187351A1

公开(公告)日：2019-06-20

申请号：US16274915

申请日：2019-02-13

Applicant: ZEON CORPORATION

Inventor： Shunsuke YAMANAKA ,  Masakazu SAITO ,  Hiromasa HASHIMOTO

IPC: G02B5/30 ,  B32B23/20 ,  B32B27/08 ,  G02F1/13363 ,  B32B23/08 ,  H01L51/52

CPC classification number: G02B5/3083 ,  B32B23/08 ,  B32B23/20 ,  B32B27/08 ,  B32B2307/42 ,  B32B2457/206 ,  G02B5/30 ,  G02B5/3016 ,  G02F1/13363 ,  H01L51/5281

Abstract: A multilayer film including: a first long-length substrate; and an optically anisotropic layer that is formed directly on the first substrate and contains cured liquid-crystal molecules, wherein the first substrate has an orientation-controlling force caused by stretching, and a slow axis of the first substrate is different from a lengthwise direction of the first substrate; an optically anisotropic laminate, a circular polarizing plate, and an organic EL display device having the anisotropic layer; as well as manufacturing method thereof.

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：US20210214614A1

公开(公告)日：2021-07-15

申请号：US16967412

申请日：2019-02-13

Applicant: ZEON CORPORATION ,  NISSAN CHEMICAL CORPORATION

Inventor： Masakazu SAITO ,  Yuki FURUKAWA ,  Yuta KANNO

IPC: C09K19/04 ,  G02F1/1337 ,  G02B1/04 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  G02B1/08

Abstract: A liquid crystal cured layer formed of a cured product of a liquid crystal composition, wherein the liquid crystal composition contains a polymerizable liquid crystal compound having a reverse wavelength dispersion property, and a copolymer containing a monomer unit A including a monovalent group containing an aromatic ring and a monomer unit B containing a monovalent aliphatic hydrocarbon group optionally having a substituent, a main chain mesogen of the polymerizable liquid crystal compound in the liquid crystal cured layer is oriented at a tilt angle of 85° to 90° with respect to a layer plane of the liquid crystal cured layer.