公开(公告)号：US11243343B2

公开(公告)日：2022-02-08

申请号：US16808070

申请日：2020-03-03

Applicant: FUJIFILM Corporation

Inventor： Shinya Watanabe ,  Megumi Sekiguchi ,  Yujiro Yanai ,  Naoyoshi Yamada ,  Yukito Saitoh

IPC: F21V8/00 ,  G02B3/00

Abstract: Display performance can be improved by reducing light leak in an oblique direction at the time of black display while increasing front brightness. Provided is a backlight unit including: a light collimating member in which a lens array is formed on one surface of a transparent substrate and a plurality of truncated cones are arranged on another surface of the transparent substrate; a light guide plate; and a light source, in which the truncated cone on the light collimating member has a shape in which a width decreases away from the transparent substrate in a height direction, a position of each of lenses of the lens array deviates from a position of the truncated cone corresponding to the lens to move away from the light source in a direction that connects a center of the lens and the light source most adjacent to the lens, an optical axis of the lens is arranged to pass through a slope of the truncated cone corresponding to the lens, the light guide plate and a surface of the truncated cone opposite to the transparent substrate are in contact with each other, and the shape of the truncated cone of the light collimating member satisfies specific expressions.

公开(公告)号：US10747057B2

公开(公告)日：2020-08-18

申请号：US16696137

申请日：2019-11-26

Applicant: FUJIFILM Corporation

Inventor： Yukito Saitoh ,  Naoyoshi Yamada

IPC: G02F1/13363 ,  G02F1/1347 ,  G02F1/13 ,  G02F1/1335

Abstract: A display device includes an image display panel, and a viewing angle switching element, in which the viewing angle switching element includes first and second linear polarizers arranged to face each other, and a viewing angle control cell and an optical compensation sheet arranged in a laminated manner between the first and second linear polarizers, the viewing angle control cell includes a single domain vertical alignment liquid crystal cell, an angle formed between an in-plane fast axis of the optical compensation sheet and the absorption axis or the reflection axis of the first linear polarizer is 30° to 60°, and a pretilt azimuth of the vertically aligned liquid crystal of the viewing angle control cell is at an angle of 30° to 60° from the absorption axis or the reflection axis of the first linear polarizer.

公开(公告)号：US10605433B2

公开(公告)日：2020-03-31

申请号：US15668034

申请日：2017-08-03

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki Yoneyama ,  Naoyoshi Yamada ,  Tatsuya Oba

IPC: F21V13/02 ,  G02B5/02 ,  H01L33/50 ,  F21K9/64 ,  F21V9/30 ,  C09K11/62 ,  C09K11/64

Abstract: A wavelength conversion member, is provided with a wavelength conversion layer that includes quantum dots and is interposed between two barrier layers. The wavelength conversion member includes a light scattering layer that is provided between the barrier layers and the wavelength conversion layer, in which one of the barrier layers closest to the light scattering layer is formed of an inorganic component, the light scattering layer includes a binder, which is formed of either a compound having a hydrogen bonding functional group and a polymerizable group in a molecule or an organic metal coupling agent, and scattering particles having a diameter R of 0.2 to 5 μm, a thickness d of the light scattering layer is 0.2 to 4 μm, a thickness D of the wavelength conversion layer is 10 to 100 μm, and a ratio of d to D is 0.2% to 10%.

公开(公告)号：US10578921B2

公开(公告)日：2020-03-03

申请号：US16546885

申请日：2019-08-21

Applicant: FUJIFILM Corporation

Inventor： Yukito Saitoh ,  Naoyoshi Yamada

IPC: G02F1/1335

Abstract: A brightness homogenizing member comprising: an incidence surface and an emission surface, the brightness homogenizing member has a lamination structure in which the brightness homogenizing member has a layer of high refractive index and a layer of low refractive index are alternately laminated in a direction perpendicular to the emission surface, each of a plurality of the layers of high refractive index includes, on a light emission surface side, a light bending portion that bends at least a portion of light proceeding in a direction intersecting to the emission surface and cause the light to proceed in a direction in which an in-plane component parallel to the emission surface increases, in a case where the lamination structure is planarly viewed from a lamination direction in the lamination structure, the light bending portions are provided in different positions between the plurality of the layers of high refractive index.

公开(公告)号：US10513655B2

公开(公告)日：2019-12-24

申请号：US15660333

申请日：2017-07-26

Applicant: FUJIFILM Corporation

Inventor： Ryo Satake ,  Makoto Kamo ,  Naoyoshi Yamada ,  Tatsuya Oba

IPC: C09K11/02 ,  C09K11/08 ,  F21V9/30 ,  G02B1/14 ,  G02B5/20 ,  G02B5/12 ,  H01L33/50 ,  G02B6/00 ,  G02F1/1335 ,  F21V8/00

Abstract: Provided is a wavelength conversion member including: a wavelength conversion layer including at least one kind of quantum dots that are excited by excitation light to emit fluorescence and are dispersed in an organic matrix; and a barrier layer that is provided adjacent to at least one main surface of the wavelength conversion layer and includes silicon nitride and/or silicon oxynitride as a major component, in which the organic matrix is obtained by curing a curable composition including at least an alicyclic epoxy compound and includes a chemical structure A which is bonded to silicon nitride and/or silicon oxynitride as a major component of the barrier layer.

公开(公告)号：US20190377228A1

公开(公告)日：2019-12-12

申请号：US16546885

申请日：2019-08-21

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Naoyoshi Yamada

IPC: G02F1/1335

Abstract: A brightness homogenizing member comprising: an incidence surface and an emission surface, the brightness homogenizing member has a lamination structure in which the brightness homogenizing member has a layer of high refractive index and a layer of low refractive index are alternately laminated in a direction perpendicular to the emission surface, each of a plurality of the layers of high refractive index includes, on a light emission surface side, a light bending portion that bends at least a portion of light proceeding in a direction intersecting to the emission surface and cause the light to proceed in a direction in which an in-plane component parallel to the emission surface increases, in a case where the lamination structure is planarly viewed from a lamination direction in the lamination structure, the light bending portions are provided in different positions between the plurality of the layers of high refractive index.

公开(公告)号：US10408987B2

公开(公告)日：2019-09-10

申请号：US15465894

申请日：2017-03-22

Applicant: FUJIFILM Corporation

Inventor： Naoyoshi Yamada ,  Koichi Sato

IPC: G02F1/1335 ,  F21V8/00

Abstract: A wavelength conversion member including a wavelength conversion layer containing quantum dots which are excited by exciting light and emit fluorescent light rays, in which the wavelength conversion layer includes base material films on at least one surface, and in the base material films, an absorbance of light at a wavelength of 450 nm measured by using an integrating sphere is less than 0.9%, and a total light ray transmittance is less than 92%.

公开(公告)号：US09588271B2

公开(公告)日：2017-03-07

申请号：US14484453

申请日：2014-09-12

Applicant: FUJIFILM Corporation

Inventor： Naoyoshi Yamada ,  Yuusuke Furuki ,  Jun Watanabe ,  Makoto Ishiguro ,  Shinpei Yoshida

IPC: G02F1/13363 ,  G02B5/30 ,  H01L51/52 ,  G02F1/1335

CPC classification number: G02B5/3016 ,  G02B5/3025 ,  G02F1/133528 ,  G02F1/133602 ,  G02F1/133634 ,  G02F2001/133531 ,  G02F2001/133635 ,  G02F2001/133638 ,  H01L51/5281

Abstract: An organic EL display device includes at least a polarizer layer, a λ/2 plate, a λ/4 plate and an organic EL panel in this order, and an in-plane retardation Re2(550) of the λ/4 plate at 550 nm satisfies 115≦Re2(550)≦155, and an in-plane retardation Re1(550) of the λ/2 plate at 550 nm satisfies Re1(550)=2×Re2(550)±50 nm.

Abstract translation: 有机EL显示装置依次包括至少偏振器层，λ/ 2板，λ/ 4板和有机EL面板，并且在λ/ 4板的面内延迟Re2（550）为550 nm满足115≤Re2（550）≤155，λ/ 2板的550nm的面内相位差Re1（550）满足Re1（550）= 2×Re2（550）±50nm。

公开(公告)号：US09465150B2

公开(公告)日：2016-10-11

申请号：US14141699

申请日：2013-12-27

Applicant: FUJIFILM Corporation

Inventor： Nobutaka Fukagawa ,  Naoyoshi Yamada ,  Aiko Yoshida ,  Yukie Watanabe

IPC: G02B5/20 ,  G02B5/22 ,  B32B23/04 ,  B32B23/20

CPC classification number: G02B5/208 ,  B32B23/04 ,  B32B23/20 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2307/536 ,  B32B2307/584 ,  B32B2307/71 ,  B32B2457/20 ,  B32B2457/202 ,  G02B5/223

Abstract: A protective film for polarizing plate contains a resin, an ultraviolet absorbing agent A having an absorption maximum in a wavelength range of from 350 to 400 nm and an ultraviolet absorbing agent B having an absorption maximum in a wavelength range of from 270 to 330 nm, and a content of the ultraviolet absorbing agent A is from 0.1 to 5% by weight relative to the resin, a content of the ultraviolet absorbing agent B is from 0.1 to 5% by weight relative to the resin, and the protective film fulfills the requirements (a) to (d) as defined herein.

Abstract translation: 偏振片用保护膜含有树脂，波长350〜400nm的吸收最大的紫外线吸收剂A和波长270〜330nm的吸收最大的紫外线吸收剂B， 紫外线吸收剂A的含量相对于树脂为0.1〜5重量％，紫外线吸收剂B的含量相对于树脂为0.1〜5重量％，保护膜满足要求 （a）至（d）。