公开(公告)号：US12204200B2

公开(公告)日：2025-01-21

申请号：US18421734

申请日：2024-01-24

Applicant: FUJIFILM Corporation

Inventor： Wataru Hoshino ,  Yoshiaki Takada ,  Yuzo Fujiki ,  Kengo Saito ,  Yasuhiro Ishiwata ,  Takashi Katou ,  Keisuke Ushirogata

IPC: G02F1/1335 ,  C09K19/04 ,  G02B1/08 ,  G02B5/30

Abstract: A polarizer with a high degree of alignment and an image display device including the polarizer. The polarizer is formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, in which the polarizer has an array structure formed of the first dichroic material and the second dichroic material.

公开(公告)号：US11921369B2

公开(公告)日：2024-03-05

申请号：US17028153

申请日：2020-09-22

Applicant: FUJIFILM Corporation

Inventor： Wataru Hoshino ,  Yoshiaki Takada ,  Yuzo Fujiki ,  Kengo Saito ,  Yasuhiro Ishiwata ,  Takashi Katou ,  Keisuke Ushirogata

IPC: G02F1/1335 ,  C09K19/04 ,  G02B1/08 ,  G02B5/30

CPC classification number: G02F1/133528 ,  C09K19/04 ,  C09K19/0403 ,  G02B1/08 ,  C09K2019/0444 ,  C09K2323/031 ,  G02B5/3016

Abstract: An object of the present invention is to provide a polarizer having a high degree of alignment and an image display device including the polarizer. A polarizer of the present invention is a polarizer formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, in which the polarizer has an array structure formed of the first dichroic material and the second dichroic material.

公开(公告)号：US11543697B2

公开(公告)日：2023-01-03

申请号：US17130610

申请日：2020-12-22

Applicant: FUJIFILM Corporation

Inventor： Kengo Saito ,  Yuzo Fujiki ,  Wataru Hoshino

IPC: G02F1/1335 ,  G02F1/1337 ,  G02B5/30

Abstract: Provided are a polarizer having a high degree of alignment and an image display device including the polarizer. The polarizer of the present invention is a polarizer which is formed of a polarizer-forming composition containing a liquid crystal compound and a dichroic material, in which the liquid crystal compound and the dichroic material are horizontally aligned, and in an X-ray diffraction spectrum of the polarizer, at least one of a plurality of peaks observed in a diffraction angle range of 17° or less is a peak A in which an interval of a periodic structure corresponding to the at least one peak does not have an integer multiple relationship with an interval of a periodic structure corresponding to at least one of other peaks.

公开(公告)号：US10692522B2

公开(公告)日：2020-06-23

申请号：US15705531

申请日：2017-09-15

Applicant: FUJIFILM Corporation

Inventor： Toshio Tada ,  Norihito Kasada ,  Masahito Oyanagi ,  Akinori Sugishima ,  Kengo Saito

IPC: G11B5/706 ,  G11B5/842 ,  G11B5/70 ,  G11B5/845 ,  G11B5/708

Abstract: The magnetic recording medium has a non-magnetic support and a magnetic layer which is provided on the support and contains ferromagnetic powder and a binder, in which the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, the magnetic layer contains an abrasive, an intensity ratio (Int (110)/Int (114)) of a peak intensity Int (110) of a diffraction peak of (110) plane of a crystal structure of the hexagonal ferrite, determined by performing X-ray diffraction analysis on the magnetic layer by using an In-Plane method, to a peak intensity Int (114) of a diffraction peak of (114) plane of the crystal structure is equal to or higher than 0.5 and equal to or lower than 4.0, and a squareness ratio in a vertical direction is equal to or higher than 0.65 and equal to or lower than 1.00. The present invention also provides a method for manufacturing the magnetic recording medium.

公开(公告)号：US11339329B2

公开(公告)日：2022-05-24

申请号：US16907822

申请日：2020-06-22

Applicant: FUJIFILM Corporation

Inventor： Wataru Hoshino ,  Yoshiaki Takada ,  Kengo Saito

IPC: C09K19/46 ,  C09K19/60 ,  G02B5/30 ,  G02F1/1335 ,  H01L51/52

Abstract: Provided is a polarizer having a high degree of alignment and an image display device including the polarizer. The polarizer is formed of a polarizer-forming composition containing a polymer liquid crystal compound and a dichroic material, in which the polymer liquid crystal compound is a thermotropic liquid crystal and a crystalline polymer, the polymer liquid crystal compound and the dichroic material are horizontally aligned, and crystallinity of the polymer liquid crystal compound in the polarizer-forming composition is higher than the crystallinity of the polymer liquid crystal compound alone.

公开(公告)号：US12085742B2

公开(公告)日：2024-09-10

申请号：US16582372

申请日：2019-09-25

Applicant: FUJIFILM Corporation

Inventor： Yumi Katou ,  Shinichi Morishima ,  Wataru Hoshino ,  Jun Takeda ,  Kengo Saito ,  Yuzo Fujiki

IPC: G02B5/22 ,  C09B31/043 ,  C09B31/153 ,  C09B31/20 ,  C09B67/22 ,  C09K19/38 ,  C09K19/60 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/1337

CPC classification number: G02B5/3016 ,  C09B31/043 ,  C09B31/153 ,  C09B31/20 ,  C09B67/0046 ,  C09K19/3838 ,  C09K19/601 ,  G02B5/22 ,  G02B5/3083 ,  G02F1/133528 ,  G02F1/133723 ,  C09K2323/03 ,  C09K2323/031 ,  G02F2202/04

Abstract: An object of the invention is to provide an anisotropic light absorption film having both a high alignment degree and high light resistance, and a laminate provided using the anisotropic light absorption film. An anisotropic light absorption film according to the embodiment of the invention is formed from a composition having a first dichroic azo dye, a second dichroic azo dye, and a compound represented by Formula (I) or a polymer thereof, the first dichroic azo dye has a solution absorption maximum wavelength of 400 nm or greater and less than 550 nm, the second dichroic azo dye has a solution absorption maximum wavelength of 550 nm or greater and 750 nm or less, and the film has an arrangement structure of the first dichroic azo dye or an arrangement structure of the second dichroic azo dye therein.

公开(公告)号：US12065605B2

公开(公告)日：2024-08-20

申请号：US17684988

申请日：2022-03-02

Applicant: FUJIFILM Corporation

Inventor： Takashi Katou ,  Yoshiaki Takada ,  Keigo Shiga ,  Kengo Saito

IPC: G02F1/1333 ,  C09K19/24 ,  C09K19/38 ,  C09K19/60

CPC classification number: C09K19/24 ,  C09K19/3852 ,  C09K19/601 ,  C09K2219/03

Abstract: Provided is a liquid crystal composition capable of forming a light absorption anisotropic film with excellent light resistance, a dichroic material, a light absorption anisotropic film, a laminate, and an image display device. The liquid crystal composition contains a liquid crystal compound and a dichroic material having a structure represented by Formula (1).

公开(公告)号：US12032188B2

公开(公告)日：2024-07-09

申请号：US18447862

申请日：2023-08-10

Applicant: FUJIFILM Corporation

Inventor： Wataru Hoshino ,  Madoka Kawai ,  Shinya Watanabe ,  Takuya Inoue ,  Kengo Saito ,  Naoya Nishimura

IPC: G02B5/30 ,  C09K19/38 ,  C09K19/56 ,  C09K19/60

CPC classification number: G02B5/3016 ,  C09K19/3852 ,  C09K19/56 ,  C09K19/601

Abstract: Provided is an optically anisotropic film, an optical film, and a display device, which have a high contrast and excellent light fastness. The optically anisotropic film includes a liquid crystal compound and a dichroic substance, in which the liquid crystal compound is vertically aligned, the dichroic substance forms an arrangement structure, and in a case where, in a cross section observed with a scanning transmission electron microscope, a length of a major axis of the arrangement structure is defined as L, and a length of a minor axis of the arrangement structure is defined as D, 16 or more arrangement structures satisfying L≥30 nm are observed per 40 μm2.

公开(公告)号：US11768323B2

公开(公告)日：2023-09-26

申请号：US17130600

申请日：2020-12-22

Applicant: FUJIFILM Corporation

Inventor： Wataru Hoshino ,  Yoshiaki Takada ,  Yasuhiro Ishiwata ,  Yuzo Fujiki ,  Kengo Saito

IPC: G02B5/30 ,  G02F1/1335 ,  H10K50/86

CPC classification number: G02B5/3016 ,  G02F1/133528 ,  H10K50/86 ,  G02F2203/055

Abstract: A polarizer with a high degree of alignment and an image display device including the polarizer. The polarizer is formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, in which the polarizer has an array structure formed of the first dichroic material and an array structure formed of the second dichroic material.

公开(公告)号：US11001653B2

公开(公告)日：2021-05-11

申请号：US15922212

申请日：2018-03-15

Applicant: FUJIFILM Corporation

Inventor： Ayako Muramatsu ,  Hiroshi Sato ,  Kengo Saito ,  Takashi Komiyama ,  Keita Takahashi

IPC: C08F20/30 ,  G02B5/30 ,  C09K19/38 ,  G02F1/1335

Abstract: An object of the present invention is to provide an optical film having an optically anisotropic layer having excellent durability, and a polarizing plate and an image display device using the same. This optical film of the present invention is an optical film at least having an optically anisotropic layer, in which the optically anisotropic layer is a layer obtained by polymerizing a polymerizable liquid crystal composition containing a predetermined liquid crystal compound and a polymerization initiator, and the optically anisotropic layer has a density of 1.20 g/cm3 or more and a crosslinking point density of 0.0016 mol/cm3 or more.