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公开(公告)号：US20130222910A1
公开(公告)日：2013-08-29
申请号：US13860908
申请日：2013-04-11
Applicant: FUJIFILM Corporation
Inventor： Hiroyuki YONEYAMA , Yuta TAKAHASHI
CPC classification number: G02B5/3083 , G02B1/04 , G02B5/3025 , G02F1/13363 , Y10T428/105 , Y10T428/24355
Abstract: An optical film having: a hard coat layer; an optically anisotropic layer; and a transparent support, wherein the optically anisotropic layer contains a liquid crystalline compound and a binder, the hard coat layer, the transparent support, and the optically anisotropic layer are laminated in this order, a surface of the optically anisotropic layer contains a fluorine-containing compound not forming covalent bond with the binder of the optically anisotropic layer, a surface of the optical film on the hard coat layer-formed side contains a fluorine-containing or silicone series compound being fixed by covalent bond, and a topmost surface properties of the optical film on hard coat layer-formed side satisfies the specific conditions.
Abstract translation: 一种光学膜，具有：硬涂层; 光学各向异性层; 和透明支持体，其中光学各向异性层含有液晶化合物和粘合剂，硬涂层，透明载体和光学各向异性层依次层叠，光学各向异性层的表面含有氟 - 含氟化合物与光学各向异性层的粘合剂不形成共价键，硬涂层形成侧的光学膜的表面含有通过共价键固定的含氟或硅氧烷系化合物，最表面性质 硬涂层形成侧的光学膜满足特定条件。
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公开(公告)号：US20230176438A1
公开(公告)日：2023-06-08
申请号：US18162379
申请日：2023-01-31
Applicant: FUJIFILM Corporation
Inventor： Shinpei YOSHIDA , Yuta TAKAHASHI , Kentaro YAMURA , Keisuke KODAMA
IPC: G02F1/137 , G02F1/1333 , G02F1/13363 , G02F1/1337
CPC classification number: G02F1/137 , G02F1/133362 , G02F1/133636 , G02F1/133742 , G02F1/133738
Abstract: Provided is an optically anisotropic layer formed of a liquid crystal compound, which includes first and second layers in direct contact along a thickness direction, an alignment state of the liquid crystal compound in the first layer is different from the second layer, and the optically anisotropic layer satisfies a relationship of Expression (2A) Xmax/Xmin
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公开(公告)号：US20230120119A1
公开(公告)日：2023-04-20
申请号：US18068211
申请日：2022-12-19
Applicant: FUJIFILM Corporation
Inventor： Shinpei YOSHIDA , Yuta TAKAHASHI
Abstract: Provided is a circularly polarizing plate with which, in a case where a display device obtained by disposing the circularly polarizing plate on a display element is viewed from an oblique direction while the direction thereof is being changed, the display device exhibits little change in tint and has a low reflectivity; and an organic electroluminescent display device. The circularly polarizing plate includes a polarizer and an optically anisotropic layer, in which the optically anisotropic layer is a layer formed by fixing a liquid crystal compound having reverse wavelength dispersibility twist-aligned with a thickness direction as a helical axis, the molecular axis of the liquid crystal compound in the optically anisotropic layer is horizontal to the surface of the optically anisotropic layer, and the twisted angle of the twist-aligned liquid crystal compound is 15° to 360°.
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公开(公告)号：US20230113900A1
公开(公告)日：2023-04-13
申请号：US17952991
申请日：2022-09-26
Applicant: FUJIFILM Corporation
Inventor： Shinpei YOSHIDA , Yuta TAKAHASHI
IPC: G02B5/30
Abstract: Provided are a circularly polarizing plate in which the black tint variation is suppressed in a case where a display device obtained by attaching the circularly polarizing plate to a display element is displayed in black and is then viewed from the front direction in a sunlight environment, and a display device. The circularly polarizing plate is has a polarizer, a first optically anisotropic layer, and a second optically anisotropic layer in this order, in which the first optically anisotropic layer is a layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending in a thickness direction, the second optically anisotropic layer is an A-plate, an absorption axis of the polarizer and an in-plane slow axis of the second optically anisotropic layer are parallel or orthogonal to each other, and the first optically anisotropic layer and the second optically anisotropic layer exhibit predetermined optical properties.
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15.发明申请公开(公告)号：US20220206203A1
公开(公告)日：2022-06-30
申请号：US17698500
申请日：2022-03-18
Applicant: FUJIFILM Corporation
Inventor： Satoshi YANOKUCHI , Shinpei YOSHIDA , Yuta TAKAHASHI
Abstract: Provided is an optical film that has a thin thickness, is suitable in terms of continuous productivity, and exhibits suppressed tinting of black color in a front direction and an oblique direction in a case of being used as a circularly polarizing plate in an organic EL display device; a circularly polarizing plate; and an organic EL display device. The optical film includes an elongated support, and a first, a second, and a third optically anisotropic layer in this order, in which a thickness of the elongated support is 10 to 45 μm, the first optically anisotropic layer is formed of a rod-like liquid crystal compound, the second optically anisotropic layer is formed by fixing a twist-aligned liquid crystal compound having a helical axis in a thickness direction, the third optically anisotropic layer is formed of a liquid crystal compound, and each optically anisotropic layer exhibits predetermined optical characteristics.
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Patent Agency Ranking
公开(公告)号：US20220171109A1
公开(公告)日：2022-06-02
申请号：US17670878
申请日：2022-02-14
Applicant: FUJIFILM Corporation
Inventor： Yuta TAKAHASHI , Shinpei YOSHIDA , Satoshi YANOKUCHI , Akira MARUYAMA , Keisuke KODAMA , Yuta FUKUSHIMA , Shunya KATOH , Yuki FUKUSHIMA , Hiroyuki HAGIO
Abstract: Provided is a method for producing an optically anisotropic layer, with a polarizer, which has a plurality of regions in which alignment states of a liquid crystal compound are fixed and different from one another; laminate, with a polarizer; and a composition. The method includes: 1) forming a composition layer containing a chiral agent containing at least a photosensitive chiral agent and a polymerizable liquid crystal compound on a substrate, 2) subjecting the composition layer to a heat treatment, 3) subjecting the composition layer to light irradiation under oxygen concentration of 1% by volume or more, after step 2), and 4) subjecting the composition layer to a curing treatment to form an optically anisotropic layer, and 5) carrying out step 3) under heating conditions, or subjecting the composition layer to a heat treatment between step 3) and step 4), with a predetermined amount of chiral agent.
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公开(公告)号：US20220171096A1
公开(公告)日：2022-06-02
申请号：US17670921
申请日：2022-02-14
Applicant: FUJIFILM Corporation
Inventor： Akira MARUYAMA , Keisuke KODAMA , Tetsuro OTSUKA , Hiroyuki HAGIO , Yuta TAKAHASHI , Shinpei YOSHIDA , Satoshi YANOKUCHI
IPC: G02B1/11 , H01J49/40 , G02F1/137 , C09K19/04 , G02F1/1337
Abstract: Provided is an optical film with a resin substrate adhered to an optically anisotropic layer and suppression of occurrence of optical defects in the optically anisotropic layer. The optical film has a resin substrate having an alignment regulating force and an optically anisotropic layer arranged thereon, in which the optically anisotropic layer contains a liquid crystal compound and a compound having a heteroatom different from the liquid crystal compound, and in a case where a surface of the optical film on an optically anisotropic layer side thereof is a first surface and a surface of the optical film on a resin substrate side thereof is a second surface, and components of the optical film in a depth direction are analyzed by time-of-flight secondary ion mass spectrometry while irradiating the optical film with an ion beam from the first surface toward the second surface, the obtained profile satisfies a predetermined requirement.
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公开(公告)号：US20240385360A1
公开(公告)日：2024-11-21
申请号：US18789111
申请日：2024-07-30
Applicant: FUJIFILM Corporation
Inventor： Yuta FUKUSHIMA , Shinpei YOSHIDA , Tomonori MIMURA , Shun KITAWAKI , Yuta TAKAHASHI
IPC: G02B5/30
Abstract: An optical film having good alignment properties of a liquid crystal compound in an optically anisotropic layer while suppressing an occurrence of bright point defects, an optically anisotropic layer, a composition for forming an alignment film, a method for producing an optical film, a polarizing plate, and an image display device. The optical film includes an alignment film and an optically anisotropic layer, in which the optically anisotropic layer is a layer formed of a composition for forming an optically anisotropic layer, containing a polymerizable liquid crystal compound, and the alignment film is a film formed of a composition for forming an alignment film, containing an additive having an alkyl group having 5 to 29 carbon atoms and a polymer having no alkyl group having 5 to 29 carbon atoms.
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19.发明公开公开(公告)号：US20230200192A1
公开(公告)日：2023-06-22
申请号：US18169694
申请日：2023-02-15
Applicant: FUJIFILM Corporation
Inventor： Yoshiaki HISAKADO , Yuta TAKAHASHI , Shinpei YOSHIDA
CPC classification number: H10K59/8793 , G02B5/3016 , G02B5/3083
Abstract: A circularly polarizing plate in which tint unevenness in an oblique direction can be suppressed when the circularly polarizing plate is applied to an organic EL display device. The circularly polarizing plate includes a polarizer and a phase difference film laminated on one surface side of the polarizer, in which it has a moisture content of 1.8% or less, an absolute value of a chromaticity a* and chromaticity b* are 10 or less at any azimuthal angle, in a case where the chromaticity a* and b* are measured at all azimuthal angles with a polar angle of 40° from a normal direction of the circularly polarizing plate of a laminate when a reflectivity is measured at all azimuthal angles with a polar angle of 40° from the normal direction of the circularly polarizing plate of the laminate, the reflectivity is 3.0% or less at any azimuthal angle.
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公开(公告)号：US20230004044A1
公开(公告)日：2023-01-05
申请号：US17850392
申请日：2022-06-27
Applicant: FUJIFILM Corporation
Inventor： Yuta FUKUSHIMA , Keisuke KODAMA , Yoshinori MAEDA , Akira MARUYAMA , Yuki NAKAMURA , Shunya KATOH , Yuta TAKAHASHI
IPC: G02F1/1335 , G02F1/1337 , G02B5/30 , C09D125/06 , C09D123/08 , C09K19/58 , C09K19/20 , C09K19/32
Abstract: Provided are an optical film, a circularly polarizing plate, and an image display apparatus in each of which the occurrence of cracks is suppressed in the obtained film in a case of being punched. The optical film includes a stretched resin film and a liquid crystal layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending along a direction in thickness, in which a δa value calculated using a three-dimensional solubility parameter of a resin in the stretched resin film is 8.0 MPa1/2 or less, the liquid crystal layer contains a cured substance of a polyfunctional compound having two or more polymerizable groups in one molecule, and an absolute value of a difference between the δa value calculated using the three-dimensional solubility parameter of the polyfunctional compound and the δa value calculated using the three-dimensional solubility parameter of the resin is 4.0 MPa1/2 or less.
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