公开(公告)号：US20220229218A1

公开(公告)日：2022-07-21

申请号：US17702313

申请日：2022-03-23

Applicant: FUJIFILM Corporation

Inventor： Takashi YONEMOTO ,  Naoki KOITO ,  Shun INOUE

IPC: G02B5/30 ,  H01L51/52

Abstract: Provided is an image display device including an optical laminate having, in order, a pressure-sensitive adhesive layer, a specific laminate including an alignment layer and an optically anisotropic layer which are adjacent to each other, and another pressure-sensitive adhesive layer in this order, in which the pressure-sensitive adhesive layers are adjacent to the two surfaces of the specific laminate. The specific laminate has a thickness of 15 μm or less, the optically anisotropic layer has a thickness of 5 μm or less, and a thickness d of the alignment layer and an elastic modulus E of the alignment layer satisfy Expression (1): −E+0.45×d+3.6>0 (1), where d is in units of μm, and E is in units of GPa.

公开(公告)号：US20210302773A1

公开(公告)日：2021-09-30

申请号：US17338142

申请日：2021-06-03

Applicant: FUJIFILM Corporation

Inventor： Naoki KOITO ,  Takashi YONEMOTO ,  Tetsuro OTSUKA ,  Jun TAKEDA

IPC: G02F1/13363 ,  G02F1/1337 ,  G02F1/1333

Abstract: The present invention provides a light absorption anisotropic film excellent in adhesiveness to an adjacent layer, and a laminate and an image display device, in which the light absorption anisotropic film is used. The light absorption anisotropic film is formed from a liquid crystal composition that contains a high-molecular weight liquid crystal compound and a dichroic substance, and is a light absorption anisotropic film in which regarding a signal derived from the dichroic substance detected by a time-of-flight secondary ion mass spectrometry, a relationship between a maximum intensity Imax in a thickness direction of a film and an intensity Isur on at least one surface of the film satisfies Expression (I-1) 2≤Imax/Isur.

公开(公告)号：US20200341183A1

公开(公告)日：2020-10-29

申请号：US16925305

申请日：2020-07-09

Applicant: FUJIFILM CORPORATION

Inventor： Takashi YONEMOTO ,  Hirofumi TOYAMA ,  Naoyoshi YAMADA

IPC: F21V8/00 ,  G02F1/13357

Abstract: The backlight unit includes: a light guide that includes an incidence surface and an emission surface facing each other; and a light source portion including a plurality of point light sources that are two-dimensionally arranged to face the incidence surface of the light guide, in which light emitted from the light source portion is incident into the incidence surface of the light guide and emitted from the emission surface, the backlight unit is driven by local dimming in which at least two point light sources among the plurality of point light sources are used as a minimum point lighting unit, the light guide includes a plurality of light advancing direction conversion portions and a plurality of light extraction portions, each of the light advancing direction conversion portions is provided at each of positions on the incidence surface facing the plurality of point light sources and changes an advancing direction of each of light components to a direction in which the light component is guided in the light guide, and each of the light extraction portions is provided per unit region corresponding to the minimum point lighting unit in a state where a density in a peripheral portion of the unit region is set to be higher than a density in a center portion of the unit region and emits the light guided in the light guide.

公开(公告)号：US20170017022A1

公开(公告)日：2017-01-19

申请号：US15278552

申请日：2016-09-28

Applicant: FUJIFILM Corporation

Inventor： Takashi YONEMOTO ,  Yukito SAITOH ,  Megumi SEKIGUCHI

IPC: G02B5/02 ,  F21V8/00

CPC classification number: G02B5/0242 ,  G02B6/005 ,  G02B6/0051 ,  G02F1/1336 ,  G02F2001/133614 ,  G02F2202/36

Abstract: Disclosed is an optical conversion member, including an optical conversion layer containing quantum dot emitting fluorescent light and an anisotropic light scattering layer having I (0°)/I (40°) of 3 or greater, in which I (0°) indicates a transmission light intensity of the anisotropic light scattering layer at the time of allowing light to be incident on the anisotropic light scattering layer from a normal direction of a surface of the anisotropic light scattering layer, and I (40°) indicates a transmission light intensity of the anisotropic light scattering layer in an azimuth in which a transmission light intensity of the anisotropic light scattering layer at the time of allowing light to be incident on the anisotropic light scattering layer from a direction of a tilt angle of 40° with respect to the normal direction of the surface of the anisotropic light scattering layer becomes a minimum value.

Abstract translation: 公开了一种光转换构件，其包括含有量子点发射荧光的光转换层和I（0°）/ I（40°）为3以上的各向异性光散射层，其中I（0°）表示 允许光从各向异性光散射层的表面的法线入射到各向异性光散射层时的各向异性光散射层的透射光强度和I（40°）表示透射光强度 在各向异性光散射层的透射光强度的允许光从入射到各向异性光散射层的倾斜角为40°的方向相对于正常的方向的各向异性光散射层 各向异性光散射层的表面的方向成为最小值。

公开(公告)号：US20240134098A1

公开(公告)日：2024-04-25

申请号：US18541062

申请日：2023-12-15

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Hiroshi SATO ,  Takashi YONEMOTO

IPC: G02B5/18

CPC classification number: G02B5/1866

Abstract: Provided is a transmissive liquid crystal diffraction element that can diffract different polarized light components in the same direction and has high diffraction efficiency with respect to unpolarized light. The transmissive liquid crystal diffraction element includes first to fourth optically-anisotropic layers each of which has a liquid crystal alignment pattern in which a direction of an optical axis changes while continuously rotating in at least one in-plane direction, in which the optical axis in each of the first to the fourth optically-anisotropic layers is twisted in a thickness direction, rotation directions of the optical axes in the liquid crystal alignment patterns and twisted directions of the optical axes in the thickness direction are opposite to each other in the first optically-anisotropic layer and the second optically-anisotropic layer, rotation directions of the optical axes in the liquid crystal alignment patterns and twisted directions of the optical axes in the thickness direction are opposite to each other in the third optically-anisotropic layer and the fourth optically-anisotropic layer, single periods of the liquid crystal alignment patterns are the same in the first optically-anisotropic layer and the second optically-anisotropic layer, single periods of the liquid crystal alignment patterns are the same in the third optically-anisotropic layer and the fourth optically-anisotropic layer, and the single periods of the liquid crystal alignment patterns are different in the first optically-anisotropic layer and the third optically-anisotropic layer.

公开(公告)号：US20230229038A1

公开(公告)日：2023-07-20

申请号：US18176529

申请日：2023-03-01

Applicant: FUJIFILM Corporation

Inventor： Hiroshi SATO ,  Yukito SAITOH ,  Takashi YONEMOTO ,  Makoto ISHIGURO

IPC: G02F1/1335 ,  G02F1/1337

CPC classification number: G02F1/133504 ,  G02F1/133761 ,  G02F1/133541 ,  G02B5/3083

Abstract: Provided are a liquid crystal diffraction element having a high diffraction efficiency irrespective of diffraction angles, an optical element including the liquid crystal diffraction element, and an image display unit, a head-mounted display, a beam steering, and a sensor including the liquid crystal diffraction element or the optical element. The liquid crystal diffraction element includes: an optically-anisotropic layer that is formed of a liquid crystal composition including a liquid crystal compound, in which the optically-anisotropic layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, in a case where a length over which the direction of the optical axis derived from the liquid crystal compound rotates by 180° in a plane is set as a single period, a length of the single period in the liquid crystal alignment pattern gradually changes in the one in-plane direction, in a cross-sectional image of the optically-anisotropic layer obtained by observing a cross-section taken in a thickness direction parallel to the one in-plane direction with a scanning electron microscope, the optically-anisotropic layer has bright portions and dark portions extending from one surface to another surface and each of the dark portions has two or more inflection points of angle, the optically-anisotropic layer has regions where tilt directions of the dark portions are different from each other in the thickness direction, and an average tilt angle of the dark portion gradually changes in the one in-plane direction.

公开(公告)号：US20230097214A1

公开(公告)日：2023-03-30

申请号：US18056536

申请日：2022-11-17

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Hiroshi SATO ,  Takashi YONEMOTO ,  Jun WATANABE ,  Mitsuyoshi ICHIHASHI ,  Keisuke KODAMA

IPC: G02B5/30

Abstract: A transmissive liquid crystal diffraction element includes a first optically-anisotropic layer and a second optically-anisotropic layer each of which has a liquid crystal 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, in which a rotation direction of the optical axis in the liquid crystal alignment pattern of the first optically-anisotropic layer and a rotation direction of the optical axis in the liquid crystal alignment pattern of the second optically-anisotropic layer are opposite to each other, and a single period of the liquid crystal alignment pattern in the first optically-anisotropic layer and a single period of the liquid crystal alignment pattern in the second optically-anisotropic layer are the same.

公开(公告)号：US20220281191A1

公开(公告)日：2022-09-08

申请号：US17752415

申请日：2022-05-24

Applicant: FUJIFILM Corporation

Inventor： Takashi YONEMOTO ,  Naoki KOITO ,  Yumi KATO ,  Naoyoshi YAMADA

IPC: B29D11/00 ,  C09K19/56 ,  C09K19/38 ,  C09K19/60 ,  G02B5/30

Abstract: Provided is a method for producing a light absorption anisotropic film having a three-dimensional shape and having excellent alignment, which is capable of manufacturing a light absorption anisotropic film having a high degree of polarization even where a three-dimensional shape is provided by heating molding. The method includes a step of producing an intermediate laminate having an optical coating film formed using a liquid crystal composition containing a liquid crystalline compound and a dichroic substance, and an alignment film; a step of heating the intermediate laminate produced by the film forming step to impart a three-dimensional shape; an aligning step of aligning a liquid crystalline component included in the optical coating film in the intermediate laminate imparted with the three-dimensional shape by the heating molding step to produce a light absorption anisotropic film; and a step of curing the light absorption anisotropic film produced by the aligning step.

公开(公告)号：US20200050009A1

公开(公告)日：2020-02-13

申请号：US16654959

申请日：2019-10-16

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Daisuke KASHIWAGI ,  Hirofumi TOYAMA ,  Naoyoshi YAMADA ,  Takashi YONEMOTO ,  Eiichiro AMINAKA

IPC: G02B27/22 ,  G02B5/30 ,  C09K19/36

Abstract: An optical film includes a cholesteric liquid crystal layer formed in a stripe-shaped pattern in which an optically anisotropic region having optical anisotropy and an optically isotropic region having optical isotropy are alternately disposed, a helical axis of a cholesteric liquid crystal in the optically anisotropic region is oriented in one axial direction tin a plane of the optical film, and the helical axis is oriented in a normal direction t of a boundary surface between the optically anisotropic region and the optically isotropic region.

公开(公告)号：US20190292453A1

公开(公告)日：2019-09-26

申请号：US16426313

申请日：2019-05-30

Applicant: FUJIFILM Corporation

Inventor： Takashi YONEMOTO

IPC: C09K11/70 ,  C09K11/56 ,  C09K11/02 ,  B32B27/30 ,  C08F220/10 ,  C08J7/04

Abstract: Provided are a wavelength conversion member which contains a phosphor such as a quantum dot and has high reproducibility of white light; and a backlight unit. The wavelength conversion member includes a wavelength conversion layer having a resin layer that is provided with a plurality of concave portions which are discretely disposed on one main surface thereof; and a plurality of fluorescent regions containing phosphors, which are disposed in the concave portions formed in the resin layer, in which a surface roughness Ra of a surface of the resin layer on a side where the concave portions are formed is 0.3 to 5 μm.