公开(公告)号：US20220283351A1

公开(公告)日：2022-09-08

申请号：US17752409

申请日：2022-05-24

Applicant: FUJIFILM Corporation

Inventor： Naoya SHIBATA ,  Yasukazu KUWAYAMA ,  Naoki KOITO ,  Yumi KATO ,  Fumitake MITOBE ,  Naoyoshi YAMADA

IPC: G02B5/30 ,  C09J133/10

Abstract: An object of the present invention is to provide a laminate including a light absorption anisotropic layer, in which a decrease in a degree of polarization is suppressed even in a case where the laminate is simultaneously stretched in a plurality of directions, and an optical device and a display device, each using the laminate. The laminate of an embodiment of the present invention is a laminate having at least a resin substrate and a light absorption anisotropic layer, in which a tan δ peak temperature of the resin substrate is 170° C. or lower, the light absorption anisotropic layer includes a liquid crystalline compound and a dichroic substance, and an alignment degree of the dichroic substance is 0.95 or more.

公开(公告)号：US20220221630A1

公开(公告)日：2022-07-14

申请号：US17702010

申请日：2022-03-23

Applicant: FUJIFILM Corporation

Inventor： Fumitake MITOBE ,  Yukito SAITOH ,  Hiroshi SATO ,  Katsumi SASATA ,  Akiko WATANO

IPC: G02B5/18 ,  G02B5/30

Abstract: Provided are a method of forming a photo-alignment film having a large size that can appropriately align a liquid crystal compound can be formed and a method of forming a liquid crystal layer having a large size in which alignment defects of a liquid crystal compound can be suppressed. The method of forming a photo-alignment film includes: an exposure step of irradiating a surface of a photo-alignment film including a photo-alignment material that is formed on a support with interference light formed by intersection of two light components such that the surface of the photo-alignment film is exposed to form, on the photo-alignment film, an alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction; and a moving step of moving the support by a distance D in a direction parallel to the surface of the support and parallel to a straight line formed by optical axes of the two beams, in which the photo-alignment film is exposed by alternately repeating the exposure step and the moving step. Here, the distance D is represented by λ/{2×sin(α/2)}×N−λ/8

公开(公告)号：US20240141233A1

公开(公告)日：2024-05-02

申请号：US18540111

申请日：2023-12-14

Applicant: FUJIFILM Corporation

Inventor： Hiroshi MATSUYAMA ,  Wataru HOSHINO ,  Shinya WATANABE ,  Fumitake MITOBE

IPC: C09K19/20 ,  C09K19/22 ,  C09K19/30 ,  G02B5/30

CPC classification number: C09K19/2007 ,  C09K19/22 ,  C09K19/3068 ,  G02B5/3016 ,  C09K2019/2042 ,  C09K2019/2064 ,  C09K2019/2078 ,  C09K2019/2085 ,  C09K2019/3075

Abstract: A light absorption anisotropic layer which has high contrast and can suppress hue change of an image reflected by surroundings relative to an original image when used in a viewing angle control system, an optical film using the light absorption anisotropic layer, a viewing angle control system, and an image display device. The light absorption anisotropic layer is formed of a liquid crystal composition containing a liquid crystalline compound, a dichroic substance, and an alignment agent. The liquid crystalline compound is in a liquid crystal state of a smectic phase, a content of the dichroic substance is 5.0% by mass or more with respect to a total solid content mass of the liquid crystal composition, and an angle θ between a transmittance central axis of the light absorption anisotropic layer and a normal direction of a surface of the light absorption anisotropic layer is between 0° and 45°.

公开(公告)号：US20230099442A1

公开(公告)日：2023-03-30

申请号：US18046059

申请日：2022-10-12

Applicant: FUJIFILM Corporation

Inventor： Katsufumi OHMURO ,  Naoyoshi YAMADA ,  Fumitake MITOBE ,  Naoya SHIBATA

IPC: G02F1/13363 ,  G02F1/1333 ,  G02F1/00 ,  G02F1/139

Abstract: Provided is an optical laminate, an image display device, and a glass composite which are capable of sufficiently shielding light emitted in a direction oblique to a normal direction of a film without occurrence of moire even in a case of being used in a combination with a high-definition image display device. The optical laminate includes, in order, at least a first light absorption anisotropic layer, a refractive index anisotropic layer formed of a one or more layers that contain a liquid crystal compound having a twisted structure, and a second light absorption anisotropic layer, in which the first light absorption anisotropic layer and the second light absorption anisotropic layer contain an anisotropic absorbing material and each have an absorption axis that is aligned at an angle of 60° to 90° with respect to a film surface.

公开(公告)号：US20220334299A1

公开(公告)日：2022-10-20

申请号：US17853282

申请日：2022-06-29

Applicant: FUJIFILM Corporation

Inventor： Yasukazu KUWAYAMA ,  Fumitake MITOBE ,  Yuzo FUJIKI ,  Jun TAKEDA

IPC: G02B5/30

Abstract: The present invention provides a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has a polarizing element. The polarizing element has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 or more and less than 1.78, an in-plane refractive index anisotropy Δn at a wavelength of 550 nm of the alignment film is less than 0.10.

公开(公告)号：US20190064587A1

公开(公告)日：2019-02-28

申请号：US16170746

申请日：2018-10-25

Applicant: FUJIFILM Corporation

Inventor： Fumitake MITOBE ,  Jun TAKEDA ,  Yasukazu KUWAYAMA ,  Yuya HAMAGUCHI

IPC: G02F1/1335 ,  G02F1/13363

Abstract: A method for manufacturing a polarizing plate capable having excellent appearance properties and including a polarizer, an optical rotatory layer, and a brightness enhancement film, a polarizing plate, and a liquid crystal display device including the polarizing plate, are described. The method includes forming an optical rotatory layer, which has a film thickness of 10 μm or less and rotates a polarization axis of linearly polarized light, on a temporary support to manufacture a temporary support with an optical rotatory layer; bonding the optical rotatory layer of the temporary support with an optical rotatory layer and polarizer through a curable adhesive layer, and curing the curable adhesive layer to form a first bonding layer having a storage elastic modulus of 2 to 1500 MPa; peeling off the temporary support from the laminate; and bonding the optical rotatory layer of the laminate and a brightness enhancement film through a second bonding layer.

公开(公告)号：US20230037017A1

公开(公告)日：2023-02-02

申请号：US17901462

申请日：2022-09-01

Applicant: FUJIFILM Corporation

Inventor： Naoyoshi YAMADA ,  Fumitake MITOBE ,  Shinya WATANABE

IPC: G02B27/28 ,  G02B5/30

Abstract: A viewing angle control system is used in combination with a high-definition image display device and sufficiently shields light emitted in a direction oblique to a normal direction of a film. The viewing angle control system includes at least a first polarizer, a retardation layer, and a second polarizer in this order, where an absorption axis of the first polarizer forms an angle of 45° or greater with respect to a surface, the retardation layer satisfies Expression (1): an in-plane retardation Re of the retardation layer satisfies an expression of 80 nm

公开(公告)号：US20220206302A1

公开(公告)日：2022-06-30

申请号：US17696416

申请日：2022-03-16

Applicant: FUJIFILM Corporation

Inventor： Jun ISHIYAMA ,  Fumitake MITOBE ,  Yujiro YANAI

IPC: G02B27/01 ,  G02F1/1335 ,  G02F1/13363

Abstract: Provided are an optical filter, an optical device, and a head-mounted display which have a high light transmittance in a front direction and a wide real field of view. The optical filter includes a first anisotropic absorption layer, a first retardation layer, and a second anisotropic absorption layer in this order, each of the first anisotropic absorption layer and the second anisotropic absorption layer contains a dichroic colorant, an absorption axis of the dichroic colorant is perpendicular to a main surface, and the first retardation layer has polar angle dependence of retardation that has asymmetry about a normal direction with respect to incident light hitting at least one incident surface including a normal of a layer surface of the first retardation layer.

公开(公告)号：US20200033521A1

公开(公告)日：2020-01-30

申请号：US16587717

申请日：2019-09-30

Applicant: FUJIFILM Corporation

Inventor： Yasukazu KUWAYAMA ,  Fumitake MITOBE ,  Yuzo FUJIKI ,  Jun TAKEDA

IPC: G02B5/30 ,  G02F1/1335 ,  C09K19/56 ,  G09F13/00

Abstract: An object of the present invention is to provide a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element of an embodiment of the present invention has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.

公开(公告)号：US20150146140A1

公开(公告)日：2015-05-28

申请号：US14605163

申请日：2015-01-26

Applicant: FUJIFILM Corporation

Inventor： Ryuji SANETO ,  Fumitake MITOBE

IPC: G02F1/1335 ,  G02B1/14

CPC classification number: G02F1/133528 ,  G02B1/10 ,  G02B1/105 ,  G02B1/14 ,  G02B5/3033 ,  G02F2001/133565 ,  G02F2201/50 ,  Y10T428/269

Abstract: There is provided a polarizing plate including a first protective film, a polarizer, and a second protective film in this order, in which the first protective film is a film including a synthetic polymer, and has a thickness of 30 μm or less, an elastic modulus in the TD direction of 2 GPa to 2.5 GPa, and a humidity dimensional change rate in a TD direction of 0.1% or less, and the second protective film has an evaluation value represented by the following Equation (2) of 7.0 to 11.0: Evaluation value=elastic modulus (GPa) of the second protective film in a TD direction/humidity dimensional change rate (%) of the second protective film in the TD direction×(thickness (μm) of the second protective film/thickness (μm) of the first protective film)2×(30/thickness (μm) of the polarizer)1/2 Equation (2).

Abstract translation: 提供了包括第一保护膜，偏振片和第二保护膜的偏振片，其中第一保护膜是包括合成聚合物的膜，并且具有30μm或更小的厚度，弹性 TD方向的模量为2GPa至2.5GPa，TD方向的湿度尺寸变化率为0.1％以下，第二保护膜具有由下式（2）表示的评价值为7.0〜11.0： 评估值= TD方向上的第二保护膜的弹性模量（GPa）/第二保护膜的TD方向的湿度尺寸变化率（％）×（第二保护膜的厚度（μm）/厚度（μm） 的第一保护膜）2×（30 /偏振片的厚度（μm））1/2等式（2）。