公开(公告)号：US11914172B2

公开(公告)日：2024-02-27

申请号：US17376731

申请日：2021-07-15

Applicant: FUJIFILM Corporation

Inventor： Hirofumi Toyama ,  Tatsuya Oba ,  Takashi Yonemoto

IPC: G02B5/00 ,  B82Y20/00 ,  G02B5/20 ,  G02B5/02 ,  G02F1/1335 ,  G02F1/13357

CPC classification number: G02B5/003 ,  B82Y20/00 ,  G02B5/20 ,  G02B5/0242 ,  G02F1/133603 ,  G02F1/133606 ,  G02F1/133611 ,  G02F1/133614

Abstract: Provided are a light absorbing material-containing film which contains quantum dots or the like and is capable of suppressing in-plane luminance unevenness and chromaticity unevenness; and a backlight unit. The light absorbing material-containing film includes a light absorbing material-containing layer that has a plurality of cylindrical or polygonal prism-shaped resin portions discretely disposed and a light absorption region contain light absorbing bodies and formed between the plurality of resin portions; a first substrate film that is laminated on one main surface of the light absorbing material-containing layer; and a second substrate film laminated on the other main surface of the light absorbing material-containing layer, where the light absorption region contains at least one phosphor that serves as the light absorbing body, and a binder.

公开(公告)号：US11886079B2

公开(公告)日：2024-01-30

申请号：US18064036

申请日：2022-12-09

Applicant: FUJIFILM Corporation

Inventor： Tatsuya Oba ,  Isao Fujiwara ,  Shinji Hikita

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133614 ,  G02F1/133603

Abstract: The wavelength conversion member includes a wavelength conversion layer containing quantum dots, in which the wavelength conversion layer is provided between two substrates, at least one of the two substrates has a barrier layer, the wavelength conversion member has a total thickness of 120 μm or less, the wavelength conversion member has a rub resistance of 100 g or more, and the wavelength conversion member exhibits a bend resistance of a mandrel diameter of 4 mm or less in a bend resistance test carried out according to a cylindrical mandrel method specified in JIS K 5600-5-1:1999.

公开(公告)号：US11740506B2

公开(公告)日：2023-08-29

申请号：US16902590

申请日：2020-06-16

Applicant: FUJIFILM Corporation

Inventor： Akiko Watano ,  Tatsuya Oba ,  Hirofumi Toyama ,  Takashi Yonemoto

IPC: H01L33/50 ,  G02F1/13357 ,  G02F1/1335

CPC classification number: G02F1/133603 ,  H01L33/504 ,  C09K2323/035 ,  G02F1/133507 ,  G02F1/133602 ,  G02F1/133605 ,  G02F1/133614

Abstract: A wavelength conversion member suppresses peeling at an edge at cutting; and is used with a backlight unit and a liquid crystal display device. The wavelength conversion member includes a first substrate, a wavelength conversion layer, and a second substrate, in which each of the first and second substrates includes a support, a barrier layer, and an organic layer, where each of the barrier layers contains at least aluminum and phosphorus, each of the organic layers is formed of a composition containing a polymer A having a glass transition temperature of 50° C. or lower and a polymer B having an acryloyl or methacryloyl group in a molecule thereof, and the wavelength conversion layer is a layer in which at least one selected from the group consisting of a quantum dot, a phosphor particle, and a phosphor coloring agent is dispersed in a matrix made of an acrylic resin.

公开(公告)号：US10273408B2

公开(公告)日：2019-04-30

申请号：US15817898

申请日：2017-11-20

Applicant: FUJIFILM Corporation

Inventor： Ryo Satake ,  Tatsuya Oba ,  Hideaki Ito ,  Hiroyuki Yoneyama

IPC: F21V8/00 ,  G02B5/20 ,  C09K11/02 ,  C09K11/88 ,  H01L33/50 ,  G02F1/1335

Abstract: A wavelength conversion member is provided. The wavelength conversion member includes: a wavelength conversion layer including at least one kind of quantum dots that are excited by excitation light to emit fluorescence and an antioxidant; at least one interposing layer that is formed to be adjacent to the wavelength conversion layer; and a barrier layer that is formed on at least one surface of the wavelength conversion layer, in which at least one layer of the interposing layers is an antioxidant-containing interposing layer including the antioxidant.

公开(公告)号：US09632229B2

公开(公告)日：2017-04-25

申请号：US15041673

申请日：2016-02-11

Applicant: FUJIFILM Corporation

Inventor： Naoyoshi Yamada ,  Tatsuya Oba ,  Yukito Saitoh ,  Katsufumi Ohmuro ,  Akiko Watano

IPC: G02F1/1335 ,  F21V8/00

CPC classification number: G02B6/005 ,  G02B6/0023 ,  G02F1/1336 ,  G02F1/133615 ,  G02F1/133617 ,  G02F2001/133614

Abstract: A liquid crystal display device having high transmittance and a high color reproduction region, which includes a backlight unit including a light conversion member; and a liquid crystal cell and in which the light conversion member includes a light conversion layer containing a fluorescent material and an optical film arranged on both surfaces of the light conversion layer, the optical film includes an optical thin film forming an air interface, and a layer directly adjacent to the optical thin film, the liquid crystal display device satisfies n(535)

公开(公告)号：US11242481B2

公开(公告)日：2022-02-08

申请号：US16440091

申请日：2019-06-13

Applicant: FUJIFILM Corporation

Inventor： Tatsuya Oba ,  Satoshi Kuniyasu

IPC: C09K11/00 ,  C09K11/02 ,  C09K11/08 ,  C09K11/70 ,  C09K11/88 ,  G02F1/13357 ,  C09K11/56 ,  F21V9/00 ,  G02B5/20 ,  F21S2/00 ,  F21V9/08 ,  G02F1/1335

Abstract: Provided is 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 wavelength conversion film includes 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·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 3 to 30 vol %.

公开(公告)号：US10982135B2

公开(公告)日：2021-04-20

申请号：US16288503

申请日：2019-02-28

Applicant: FUJIFILM Corporation

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

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

Abstract: A phosphor-containing film capable of suppressing deterioration of phosphor and capable of suppressing generation of luminescent spots and the reduction in luminance due to a defect of the resin layer. The film includes: a phosphor-containing layer having a resin layer which has impermeability to oxygen and is provided with a plurality of discretely arranged concave portions, and a plurality of fluorescent regions, each of which is arranged in the concave portion of the resin layer and contains a phosphor that deteriorates through a reaction with oxygen when exposed to oxygen; and a first substrate film and a second substrate film, which are respectively laminated on one main surface and the other main surface of the phosphor-containing layer, in which the fluorescent regions contain a binder and quantum dots serving as the phosphor.

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：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：US10480751B2

公开(公告)日：2019-11-19

申请号：US15956240

申请日：2018-04-18

Applicant: FUJIFILM Corporation

Inventor： Satoshi Kuniyasu ,  Tatsuya Oba ,  Masayuki Kusumoto

IPC: F21V9/08 ,  F21V9/40 ,  F21V9/30 ,  G02B5/20 ,  F21K9/64 ,  G02F1/1335

Abstract: The wavelength conversion laminated film includes a laminate which has a wavelength conversion layer containing a phosphor and a gas barrier layer laminated on both the main surfaces of the wavelength conversion layer and an end face sealing layer which covers at least end faces of the wavelength conversion layer among end faces of the laminate, in which the end face sealing layer includes, from the side of the end faces of the laminate, a first metal layer coming into contact with the end faces, a resin layer, and a second metal layer in this order.