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：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：US10366876B2

公开(公告)日：2019-07-30

申请号：US16181816

申请日：2018-11-06

Applicant: FUJIFILM Corporation

Inventor： Keisuke Oku ,  Kenichi Kakishita ,  Tatsuya Oba

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

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, including a first substrate film; and a phosphor-containing layer at which a plurality of regions containing phosphors, which, if exposed to oxygen, deteriorate by reacting with the oxygen, are discretely disposed on the first substrate film, and at which a resin layer having an impermeability to oxygen is disposed between the discretely disposed regions containing phosphors, in which a width S of the resin layer between the regions containing phosphors is 0.01≤S

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.