公开(公告)号：US10153151B2

公开(公告)日：2018-12-11

申请号：US15869469

申请日：2018-01-12

Applicant: FUJIFILM Corporation

Inventor： Keisuke Oku ,  Kenichi Kakishita ,  Tatsuya Oba

IPC: H01J61/46 ,  F01D11/02 ,  F16J15/3288 ,  C09K11/77 ,  H01J61/35 ,  H01J61/44 ,  H01J9/22 ,  C09K11/00 ,  G02B5/20 ,  G02F1/1335

Abstract: Provided are a phosphor-containing capable of suppressing deterioration of phosphors and can be manufactured with high efficiency and a backlight unit. Specifically, provided is a phosphor-containing film 1, including a first substrate film 10; and a phosphor-containing layer 30 at which a plurality of regions 35 containing phosphors 31, which, if exposed to oxygen, deteriorate by reacting with the oxygen, are discretely disposed on the first substrate film 10, and at which a resin layer 38 having an impermeability to oxygen is disposed between the discretely disposed regions 35 containing phosphors 31, in which a width S of the resin layer 38 between the regions 35 containing phosphors 31 is 0.01≤S

公开(公告)号：US10784417B2

公开(公告)日：2020-09-22

申请号：US16519460

申请日：2019-07-23

Applicant: FUJIFILM Corporation

Inventor： Satoshi Kuniyasu ,  Tatsuya Oba

IPC: H01L33/50 ,  B32B27/30 ,  H01L21/02

Abstract: Provided is a wavelength conversion film that suppresses a deterioration of quantum dots by oxygen and is capable of suppressing a decrease in brightness. The wavelength conversion film includes a wavelength conversion layer and auxiliary layers sandwiching the wavelength conversion layer, in which the wavelength conversion layer has polyvinyl alcohol and cured substance particles of a (meth)acrylate compound including wavelength conversion particles, and an oxygen permeability of the auxiliary layer is 1.0×100 to 1.0×10−2 cc/(m2·day·atm).

公开(公告)号：US10754189B2

公开(公告)日：2020-08-25

申请号：US16243430

申请日：2019-01-09

Applicant: FUJIFILM Corporation

Inventor： Satoshi Kuniyasu ,  Tatsuya Oba

IPC: G02F1/13357 ,  H01L33/60 ,  H01L33/50 ,  F21K9/62 ,  F21V9/30 ,  F21V9/32 ,  F21K9/64 ,  F21V13/08 ,  G02F1/1335

Abstract: An object of the present invention is to provide a backlight film that uses a wavelength conversion film used for a liquid crystal display or the like, has satisfactory durability, and is able to emit light without color unevenness. The object is achieved by including a wavelength conversion film having a wavelength conversion layer and a gas barrier film that sandwich the wavelength conversion layer; and at least one reflective layer provided on one main surface of the wavelength conversion film and causing a film thickness distribution of the reflective layer to be ±5% or less.

公开(公告)号：US11549054B2

公开(公告)日：2023-01-10

申请号：US16590897

申请日：2019-10-02

Applicant: FUJIFILM Corporation

Inventor： Akiko Watano ,  Tatsuya Oba ,  Hirofumi Toyama

IPC: C09K11/02 ,  C09K11/08 ,  B32B3/30 ,  F21V8/00 ,  B32B27/30 ,  B32B27/36 ,  C09K11/62 ,  B23B3/30 ,  B32B27/18 ,  H01L33/50 ,  H01L51/52

Abstract: Provided is an organic electroluminescent display device that further suppresses reflection of external light when viewed in an oblique direction; a phase difference film; and a circularly polarizing plate. This display device has an organic electroluminescent display panel, and a circularly polarizing plate arranged on the display panel, in which the circularly polarizing plate has a polarizer and a phase difference film, the phase difference film has, from a side of the polarizer, a negative A-plate, and a positive A-plate, the in-plane retardation of the negative A-plate at a wavelength of 550 nm is more than 50 nm and less than 90 nm, and the in-plane retardation of the positive A-plate at a wavelength of 550 nm is 100 to 200 nm, and the angle formed by the in-plane slow axis of the negative A-plate and the in-plane slow axis of the positive A-plate is 45°±10°.

公开(公告)号：US11136496B2

公开(公告)日：2021-10-05

申请号：US16287256

申请日：2019-02-27

Applicant: FUJIFILM Corporation

Inventor： Megumi Sekiguchi ,  Tatsuya Oba ,  Kenichi Kakishita ,  Masayuki Kusumoto ,  Natsuru Chikushi

IPC: C09K11/02 ,  F21V8/00 ,  C09K11/70 ,  H01L33/50 ,  G02B5/20 ,  C09K11/56

Abstract: A phosphor-containing film contains a phosphor such as a quantum dot and is capable of suppressing deterioration of phosphor even where the film is formed into a laminated structure; and a backlight unit including the phosphor-containing film as a wavelength converting member. The film includes: a phosphor-containing layer in which a plurality of fluorescent regions, each of which contains a phosphor that deteriorates through reaction with oxygen when exposed to oxygen, are discretely arranged and a resin layer having impermeability to oxygen is arranged among the plurality of the discretely arranged fluorescent regions; and a first substrate film and a second substrate film, which are respectively laminated on both main surfaces of the phosphor-containing layer, in which the resin layer has a Knoop hardness of 115 N/mm2 to 285 N/mm2, a creep recovery rate of 22% or less, and an elastic recovery rate of 60% or more.

公开(公告)号：US10948767B2

公开(公告)日：2021-03-16

申请号：US16401408

申请日：2019-05-02

Applicant: FUJIFILM Corporation

Inventor： Tatsuya Oba ,  Hirofumi Toyama ,  Kenichi Kakishita

IPC: G02F1/13357 ,  G02B5/20 ,  F21S2/00 ,  F21V9/00

Abstract: A phosphor-containing film suppresses deterioration of a phosphor and generation of luminescent spots and the reduction in luminance, and a backlight unit. The phosphor-containing film includes: a phosphor-containing layer having a resin layer which has oxygen impermeability and discrete concave portions, and fluorescent regions arranged in the concave portions, and a first substrate film laminated on one surface of the phosphor-containing layer and a second substrate film laminated on the opposing surface, in which the fluorescent regions contain the phosphor that deteriorates through a reaction with oxygen, and a binder, the first substrate film includes a support film and an inorganic layer provided on a surface of the support film on a side facing the phosphor-containing layer, the resin layer has a modulus of elasticity of 0.5 to 10 GPa, and a thickness of the bottom of the concave portion of the resin layer is 0.1 to 20 μm.

公开(公告)号：US20190292446A1

公开(公告)日：2019-09-26

申请号：US16440091

申请日：2019-06-13

Applicant: FUJIFILM Corporation

Inventor： Tatsuya Oba ,  Satoshi Kuniyasu

IPC: C09K11/02 ,  G02F1/1335 ,  C09K11/70 ,  C09K11/08 ,  C09K11/88

Abstract: An object is to provide: a thin wavelength conversion film in which a phosphor can be uniformly dispersed and deterioration of the phosphor caused by oxygen can also be prevented; and a backlight unit including the wavelength conversion film. The object is achieved with the wavelength conversion film including a wavelength conversion layer and a substrate, in which the wavelength conversion layer includes a binder and particles including a phosphor, an oxygen permeability coefficient of the binder is 0.01 (cc·mm)/(m2·day·atm) or lower, an oxygen permeability coefficient of the matrix is 10 to 1000 (cc·mm)/(m2·day·atm), and a content of the particles in the wavelength conversion layer is 0.01 to 5 mass %.

公开(公告)号：US09958727B2

公开(公告)日：2018-05-01

申请号：US15593914

申请日：2017-05-12

Applicant: FUJIFILM Corporation

Inventor： Tatsuya Oba ,  Tomonari Ogawa ,  Keisuke Oku

IPC: G02F1/13357 ,  G02F1/1335 ,  F21V8/00

CPC classification number: G02F1/1336 ,  F21V9/30 ,  G02B6/005 ,  G02F1/1303 ,  G02F2001/133614 ,  G02F2202/36

Abstract: The wavelength conversion member includes: a first substrate; a second substrate; and a wavelength conversion layer disposed between the first substrate and the second substrate and including quantum dots which are excited by excitation light to emit fluorescence. The wavelength conversion layer is a cured layer obtained by curing a polymerizable composition which includes the quantum dots and a polymerizable compound having a molecular weight of 200 or lower, and the number of bubble-shaped defects having a diameter of 0.1 mm or more in the wavelength conversion layer is less than 10 per 100 cm2.

公开(公告)号：US09459490B2

公开(公告)日：2016-10-04

申请号：US14687095

申请日：2015-04-15

Applicant: FUJIFILM Corporation

Inventor： Tatsuya Oba ,  Yoshitaka Maeda ,  Xiao Ling ,  Shun Inoue ,  Takahiro Ohno ,  Yohei Takahashi ,  Megumi Sekiguchi

IPC: G02F1/1335 ,  G02B1/14 ,  G02B5/30

CPC classification number: G02F1/133528 ,  B29D11/00644 ,  B29D11/0073 ,  G02B1/14 ,  G02B5/3033

Abstract: A polarizing plate includes: a polymer film; a polarizer; and a stress relaxation layer disposed between the polymer film and the polarizer, wherein a relationship of the following Expression (1) is satisfied, a thickness of the polymer film is equal to or greater than 10 μm, a distance(Ds) from the surface of the polarizing plate on the side of the polymer film to the interface between the polymer film and the stress relaxation layer is equal to or greater than 15 μm, a difference between the distance(Ds) and a thickness(C) of the polymer film is less than 15 μm, and a total thickness of the polymer film and the stress relaxation layer is equal to or less than 80 μm, 0.01

Abstract translation: 偏振片包括：聚合物膜; 偏振片 以及设置在聚合物膜和偏振片之间的应力松弛层，其中满足以下表达式（1）的关系，聚合物膜的厚度等于或大于10μm，距表面的距离（Ds） 聚合物膜侧的偏振片与聚合物膜与应力缓和层之间的界面的厚度等于或大于15μm，聚合物膜的距离（Ds）和厚度（C）之间的差异 小于15μm，聚合物膜和应力松弛层的总厚度等于或小于80μm，0.01