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：US20220057638A1

公开(公告)日：2022-02-24

申请号：US17521027

申请日：2021-11-08

Applicant: FUJIFILM Corporation

Inventor： Hiroshi SATO ,  Katsumi SASATA ,  Yukito SAITOH

IPC: G02B27/01 ,  G02B27/42 ,  G02B5/30

Abstract: Provided are a light guide element and an image display apparatus capable of suppressing the occurrence of multiple images. The light guide element includes a light guide plate and a first incidence diffraction element, a second incidence diffraction element, a first emission diffraction element, and a second emission diffraction element that are provided on the light guide plate, in which the first and second incidence diffraction elements diffract incident light in different directions to be incident into the light guide plate, the first emission diffraction element emits light that is diffracted by the first incidence diffraction element and propagates in the light guide plate, the second emission diffraction element emits light that is diffracted by the second incidence diffraction element and propagates in the light guide plate, a period of a diffraction structure of the first incidence diffraction element and a period of a diffraction structure of the second incidence diffraction element are different from each other, a period of a diffraction structure of the first emission diffraction element and a period of a diffraction structure of the second emission diffraction element are different from each other, the first and second emission diffraction elements are disposed at a position where the first and second emission diffraction elements overlap each other in a plane direction of a main surface of the light guide plate, and a periodic direction of the diffraction structure of the first emission diffraction element and a periodic direction of the diffraction structure of the second emission diffraction element intersect with each other.

公开(公告)号：US20210011208A1

公开(公告)日：2021-01-14

申请号：US17034549

申请日：2020-09-28

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Hiroshi SATO ,  Daisuke KASHIWAGI

IPC: G02B5/24 ,  G02B5/30 ,  G02B5/20

Abstract: Provided is an optical element in which the amount of light having a wavelength causing a disturbance noise can be reduced and light can be diffracted with a high diffraction efficiency. The optical element comprising: an optically-anisotropic layer that is formed using a composition including a liquid crystal compound and a dichroic colorant, 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.

公开(公告)号：US20200150334A1

公开(公告)日：2020-05-14

申请号：US16744349

申请日：2020-01-16

Applicant: FUJIFILM Corporation

Inventor： Naoyoshi YAMADA ,  Yukito SAITOH ,  Hiroshi SATO

IPC: F21V8/00 ,  G02B5/30

Abstract: Provided is an image display device including an image display unit which includes a display area in which a plurality of pixels is arranged, and a non-display area provided at a periphery of the display area, a light guide unit which has one surface disposed so as to face at least an edge of the display area of the image display unit on a viewing side and another surface that is disposed at an opposite side of the light guide from the one surface and is provided at a position shifted further toward the non-display area than the one surface, and a diffraction element which is disposed between the image display unit and the light guide unit and diffracts light from the display area toward the side of the non-display area adjacent to the edge.

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：US20200041708A1

公开(公告)日：2020-02-06

申请号：US16597144

申请日：2019-10-09

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Kunihiro ATSUMI ,  Teruki NIORI ,  Shinichi MORISHIMA

IPC: G02B5/30 ,  H01L51/52 ,  G02F1/13363

Abstract: An optical film is an optical film in which a cholesteric liquid crystalline phase is fixed and a helical axis of the cholesteric liquid crystalline phase is aligned in an in-plane uniaxial direction, and an Nz is 0.2 to 0.75.

公开(公告)号：US20190377117A1

公开(公告)日：2019-12-12

申请号：US16546872

申请日：2019-08-21

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Daisuke KASHIWAGI ,  Ayako MURAMATSU ,  Yujiro YANAI ,  Hideki KANEIWA

IPC: G02B5/30

Abstract: Provided is a depolarizing film including a depolarizing layer composed of a first region and a second region having differing optical characteristics, wherein in the depolarizing layer, the ratio between the area of the first region and the area of the second region is 0.45:0.55 to 0.55:0.45, the first region is an optically anisotropic region causing 90° optical rotation of light that is incident on one surface of the depolarizing layer before the light is emitted from the other surface, and the second region is an optically isotropic region having optical isotropy.

公开(公告)号：US20170102490A1

公开(公告)日：2017-04-13

申请号：US15388569

申请日：2016-12-22

Applicant: FUJIFILM Corporation

Inventor： Akiko WATANO ,  Toshio HARA ,  Hideaki ITO ,  Yukito SAITOH ,  Yujiro YANAI

IPC: G02B5/30 ,  C08J5/18 ,  G02B27/28

CPC classification number: G02B5/3025 ,  B32B7/02 ,  B32B27/08 ,  B32B27/18 ,  B32B27/24 ,  B32B27/283 ,  B32B27/302 ,  B32B27/304 ,  B32B27/308 ,  B32B27/32 ,  B32B27/36 ,  B32B27/365 ,  B32B2250/02 ,  B32B2250/24 ,  B32B2264/102 ,  B32B2264/12 ,  B32B2307/42 ,  B32B2307/422 ,  B32B2307/50 ,  B32B2307/51 ,  B32B2307/516 ,  B32B2307/724 ,  B32B2307/732 ,  C08J5/18 ,  C08J2367/02 ,  G02B5/3083 ,  G02B27/28

Abstract: The present invention provides a light conversion film capable of suppressing a decrease in light emission efficiency even when the film is continuously irradiated with light and suppressing a change in degree of polarization even under a wet heat environment, a method for manufacturing the same, a laminate, and a method for manufacturing the same. The light conversion film of the present invention includes a polymer, and quantum rods, in which the quantum rods are aligned such that a major axis of each of the quantum rods is parallel to one direction parallel to a surface of the light conversion film, a moisture content is 1.0% or less, and an oxygen permeability coefficient is 200 cc·20 μm/m2·day·atm or less.

公开(公告)号：US20160161801A1

公开(公告)日：2016-06-09

申请号：US15015664

申请日：2016-02-04

Applicant: FUJIFILM Corporation

Inventor： Akiko WATANO ,  Yukito SAITOH ,  Katsufumi OHMURO ,  Mitsuyoshi ICHIHASHI

IPC: G02F1/1335

CPC classification number: G02F1/133533 ,  G02B5/201 ,  G02B5/3083 ,  G02F1/133603 ,  G02F1/133621 ,  G02F2001/133562 ,  G02F2001/133567 ,  G02F2001/133614 ,  G02F2001/133624

Abstract: Provided is a liquid crystal display device including a viewer-side polarizing plate 1, a liquid crystal cell 11, a backlight-side polarizing plate 21, and a backlight unit 31; in which a three-wavelength (RGB) backlight light source having a narrow half bandwidth of the light emission intensity spectrum is used, and the viewer-side polarizing plate includes, for example, a first absorption material which has a maximum value of absorbance in a wavelength range of 470 nm to 510 nm and has a peak of the absorbance full width at half maximum of which is 50 nm or lower.

Abstract translation: 提供了一种液晶显示装置，包括观察者侧偏振板1，液晶单元11，背光源侧偏光板21和背光单元31; 其中使用具有发光强度光谱的窄半带宽的三波长（RGB）背光光源，并且观察者侧偏振片包括例如具有最大吸光度值的第一吸收材料 波长范围470nm〜510nm，半高吸光度全宽为50nm以下。

公开(公告)号：US20160091756A1

公开(公告)日：2016-03-31

申请号：US14865404

申请日：2015-09-25

Applicant: FUJIFILM Corporation

Inventor： Akiko WATANO ,  Yujiro YANAI ,  Yukito SAITOH ,  Mitsuyoshi ICHIHASHI

IPC: G02F1/1335 ,  G02B27/01

CPC classification number: G02B27/0101 ,  G02B5/30 ,  G02B2027/011 ,  G02B2027/0121

Abstract: The present invention provides a member for projection image display, including a reflection layer and a retardation layer, wherein the reflection layer includes a cholesteric liquid crystal layer exhibiting selective reflection in a visible light region, the cholesteric liquid crystal layer is a layer formed from a liquid crystal composition containing a discotic liquid crystal compound, and a front phase difference of the retardation layer is in a range of 50 nm to 400 nm; and a projection image display system which includes the above member for projection image display, wherein the retardation layer is disposed on an incident light side relative to the reflection layer, and the incident light is p-polarized light that vibrates in a direction parallel to a plane of incidence, which is capable of displaying a clear image having high reflectance and high transmittance, without a problem of a double image.

Abstract translation: 本发明提供了一种用于投影图像显示的构件，包括反射层和延迟层，其中反射层包括在可见光区域中呈现选择性反射的胆甾醇型液晶层，胆甾醇型液晶层是由 含有盘状液晶化合物的液晶组合物和相位差层的前相位差在50nm〜400nm的范围内; 以及投影图像显示系统，其包括上述用于投影图像显示的部件，其中所述延迟层相对于所述反射层设置在入射光侧，并且所述入射光是在平行于所述反射层的方向上振动的p偏振光 能够显示具有高反射率和高透射率的清晰图像的入射面，而没有双重图像的问题。