公开(公告)号：US11732194B2

公开(公告)日：2023-08-22

申请号：US17028823

申请日：2020-09-22

Applicant: FUJIFILM Corporation

Inventor： Keisuke Kodama ,  Mitsuyoshi Ichihashi ,  Shunya Katoh ,  Takeshi Nakamori

IPC: G02B5/08 ,  C09K19/58 ,  B42D25/328 ,  G02B5/30 ,  C09K19/36 ,  G01N21/21 ,  C09K19/20

CPC classification number: C09K19/586 ,  B42D25/328 ,  G02B5/3016 ,  C09K19/36 ,  C09K2019/2078 ,  G01N21/21 ,  G01N2021/216 ,  G01N2201/0683 ,  G02B5/0841 ,  B42D25/328 ,  B42D25/30

Abstract: Provided are a cholesteric liquid crystal layer having an excellent reflection anisotropy, a low haze, and a high circular polarization degree of reflected light, and a method for producing the same. In addition, provided are a laminate, an optically anisotropic body, and a reflective film, each of which including the cholesteric liquid crystal layer. A cholesteric liquid crystal layer formed using a liquid crystal compound, in which, in at least one main plane out of a pair of main planes of the cholesteric liquid crystal layer, a direction of a molecular axis of the liquid crystal compound changes while continually rotating along at least one in-plane direction, the molecular axis of the liquid crystal compound is tilted with respect to the main plane of the cholesteric liquid crystal layer, and an arrangement direction of bright portions and dark portions derived from the cholesteric liquid crystalline phase, as observed under a scanning electron microscope in a cross section perpendicular to the main plane, is tilted with respect to the main plane of the cholesteric liquid crystal layer.

公开(公告)号：US11592703B2

公开(公告)日：2023-02-28

申请号：US17850392

申请日：2022-06-27

Applicant: FUJIFILM Corporation

Inventor： Yuta Fukushima ,  Keisuke Kodama ,  Yoshinori Maeda ,  Akira Maruyama ,  Yuki Nakamura ,  Shunya Katoh ,  Yuta Takahashi

IPC: G02F1/1335 ,  G02F1/1337 ,  G02B5/30 ,  C09D125/06 ,  C09D123/08 ,  C09K19/20 ,  C09K19/32 ,  C09K19/58

Abstract: Provided are an optical film, a circularly polarizing plate, and an image display apparatus in each of which the occurrence of cracks is suppressed in the obtained film in a case of being punched. The optical film includes a stretched resin film and a liquid crystal layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending along a direction in thickness, in which a δa value calculated using a three-dimensional solubility parameter of a resin in the stretched resin film is 8.0 MPa1/2 or less, the liquid crystal layer contains a cured substance of a polyfunctional compound having two or more polymerizable groups in one molecule, and an absolute value of a difference between the δa value calculated using the three-dimensional solubility parameter of the polyfunctional compound and the δa value calculated using the three-dimensional solubility parameter of the resin is 4.0 MPa1/2 or less.

公开(公告)号：US11287555B2

公开(公告)日：2022-03-29

申请号：US16709860

申请日：2019-12-10

Applicant: FUJIFILM Corporation

Inventor： Keisuke Kodama ,  Shunya Katoh ,  Hiroshi Inada

IPC: C09K19/56 ,  G02B5/08 ,  G02B5/02 ,  G02B5/26

Abstract: An object of the present invention is to provide a method for producing a reflective layer having an excellent diffuse reflectivity and a wide reflection wavelength range. Another object of the present invention is to provide a reflective layer having an excellent diffuse reflectivity and a wide reflection wavelength range.
The method for producing a reflective layer of the present invention includes: a step 1 of applying a composition selected from the group consisting of the following composition X and the following composition Y onto a substrate to form a composition layer; a step 2 of heating the composition layer to align a liquid crystal compound in the composition layer into a cholesteric liquid crystalline phase state; a step 3 of cooling or heating the composition layer in a cholesteric liquid crystalline phase state to reduce a helical pitch; and a step 4 of irradiating at least a partial region of the composition layer with light, between the step 1 and the step 2, between the step 2 and the step 3, or after the step 3, to photosensitize a chiral agent A or a chiral agent C in the composition layer. Composition X: a composition including a liquid crystal compound, a chiral agent A whose helical twisting power is changed upon light irradiation, and a chiral agent B whose helical twisting power is increased upon cooling or heating. Composition Y: a composition including a liquid crystal compound and a chiral agent C whose helical twisting power is changed upon light irradiation and whose helical twisting power is increased upon cooling or heating.

公开(公告)号：US10942438B2

公开(公告)日：2021-03-09

申请号：US16553134

申请日：2019-08-27

Applicant: FUJIFILM Corporation

Inventor： Shunya Katoh ,  Rie Takasago

IPC: G03B21/604 ,  B32B7/023 ,  G02B5/26 ,  G02B5/30 ,  G02F1/1335

Abstract: An object of the present invention is to provide a structure having an excellent diffuse reflectivity and a method of manufacturing a structure. The object is achieved by a structure including a plurality of reflection layers formed by fixing a cholesteric liquid crystalline phase, the reflection layers being laminated, in which in a reflection layer, a bright portion and a dark portion derived from the cholesteric liquid crystalline phase have wavy structures in a cross section, and undulations of the wavy structures of bright portions closest to each other coincide in the adjacent reflection layers; and by a method of manufacturing a structure including forming a reflection layer formed by fixing a cholesteric liquid crystalline phase, in which a bright portion and a dark portion have wavy structures, in a cross section, and forming the reflection layer on a first reflection layer by a coating method using an composition containing a liquid crystal compound and a chiral agent.

公开(公告)号：US10688701B2

公开(公告)日：2020-06-23

申请号：US16107045

申请日：2018-08-21

Applicant: FUJIFILM Corporation

Inventor： Yuki Saiki ,  Akihiro Anzai ,  Shunya Katoh ,  Hiroshi Inada ,  Kazuhiro Oki

IPC: B32B27/18 ,  B32B27/26 ,  B32B27/08 ,  B32B27/30 ,  C08F20/00 ,  G02B5/00 ,  G02B5/30 ,  B29C45/16 ,  G02F1/13363 ,  C09D4/00 ,  C08F222/10 ,  B29K69/00 ,  B29K105/00 ,  B29K667/00 ,  B29L11/00

Abstract: A transfer sheet includes a cured liquid crystal composition layer, a block layer including a (meth)acrylic polymer, and a thermoplastic welded layer in this order, the thermoplastic welded layer and the block layer are in direct contact with each other, and the thermoplastic welded layer includes a thermoplastic resin and an ultraviolet curable resin.

公开(公告)号：US11987742B2

公开(公告)日：2024-05-21

申请号：US17697526

申请日：2022-03-17

Applicant: FUJIFILM Corporation

Inventor： Shunya Katoh ,  Hiroshi Inada ,  Masaaki Suzuki ,  Yuki Nakamura

IPC: G02F1/1333 ,  C09K19/02 ,  C09K19/30 ,  C09K19/34 ,  G02B5/30 ,  C09K19/04

CPC classification number: C09K19/3003 ,  C09K19/02 ,  C09K19/3068 ,  C09K19/3491 ,  G02B5/3016 ,  G02B5/3025 ,  C09K2019/0448 ,  C09K2019/3004 ,  C09K2019/3075 ,  C09K2019/3077

Abstract: Provided is a polymerizable liquid crystal composition with which an image display device having an excellent contrast can be manufactured; and a cured product, an optical film, a polarizing plate, and an image display device. The polymerizable liquid crystal composition contains a compound represented by Formula (I). L1-SP1-D5-(A1)a1-D3-(G1)g1-D1-[Ar-D2]q1-(G2)g2-D4-(A2)a2-D6-SP2-L2 . . . (I), and a compound represented by Formula (II), L5-SP5-D9-(A5)a3-D10-(G3)g3-D11-M . . . (II).

公开(公告)号：US11579507B2

公开(公告)日：2023-02-14

申请号：US17021763

申请日：2020-09-15

Applicant: FUJIFILM Corporation

Inventor： Keisuke Kodama ,  Shunya Katoh ,  Mitsuyoshi Ichihashi

IPC: G02F1/137 ,  C09K19/34 ,  C09K19/52 ,  G02F1/1333

Abstract: A method for producing a cholesteric liquid crystal layer is a method that can produce a cholesteric liquid crystal layer whose reflection surface is not parallel to a substrate surface by a simple method. The method includes: a step 1 of forming a composition layer satisfying a condition 1, a condition 2, or a condition 3 on a substrate, using a liquid crystal composition including a liquid crystal compound; and a step 2 of subjecting the composition layer to a treatment for cholesterically aligning the liquid crystal compound in the composition layer to form a cholesteric liquid crystal layer.

公开(公告)号：US10961458B2

公开(公告)日：2021-03-30

申请号：US16360441

申请日：2019-03-21

Applicant: FUJIFILM Corporation

Inventor： Masaaki Suzuki ,  Shunya Katoh ,  Koji Iijima ,  Yuki Nakamura

IPC: C09K19/38 ,  C09K19/54 ,  C09K19/46 ,  C09K19/20 ,  G02F1/1335 ,  C09K19/40 ,  G02B5/30 ,  C09K19/04

Abstract: A liquid crystal composition is provided which has excellent alignment properties, improves a surface state of an optically anisotropic layer to be formed, and improves adhesiveness with a polarizer, an optical film using the same, a polarizing plate, and an image display device. The liquid crystal composition according to the present invention is a liquid crystal composition containing a copolymer having a repeating unit represented by Formula (I) and a repeating unit represented by Formula (II), and a liquid crystal compound.

公开(公告)号：US10908338B2

公开(公告)日：2021-02-02

申请号：US16266889

申请日：2019-02-04

Applicant: FUJIFILM Corporation

Inventor： Shunya Katoh ,  Koji Iijima ,  Mitsuyoshi Ichihashi ,  Masaru Yoshikawa

IPC: G02B5/30 ,  C08F2/44 ,  G02F1/13363 ,  C09K19/40 ,  C09D133/14 ,  H01L51/52 ,  C08J7/18 ,  C09K19/34 ,  G09F9/30 ,  C09K19/00 ,  G02F1/1335 ,  G02F1/1337 ,  C08F226/10 ,  C08F220/06 ,  C08F220/30 ,  C08F222/10

Abstract: The present invention provides an optical film exhibiting high alignment and good phase difference development in an oblique direction, and a polarizing plate and an image display device using the same. This optical film of the present invention has a substrate; and a phase difference layer which is provided on the substrate to be adjacent to the substrate, in which the phase difference layer is a layer formed by fixing vertical alignment of a liquid crystal compound having a polymerizable group included in a liquid crystal composition containing the liquid crystal compound and a polymer compound, a difference in δa value between the polymer compound and the substrate, which is calculated using three-dimensional SP values, is 3 or less, and a content of the polymer compound is less than 10 parts by mass with respect to 100 parts by mass of the liquid crystal compound.

公开(公告)号：US10703973B2

公开(公告)日：2020-07-07

申请号：US15685530

申请日：2017-08-24

Applicant: FUJIFILM Corporation

Inventor： Shunya Katoh ,  Shinnosuke Sakai ,  Yuki Saiki ,  Akihiro Anzai

IPC: G02F1/1333 ,  C09K19/20 ,  B32B7/02 ,  B32B27/00 ,  C08F2/50 ,  G02B5/08 ,  G02B5/26 ,  C09K19/34 ,  C08F228/00 ,  C08F222/30 ,  C09K19/30 ,  C09K19/38 ,  G02B5/30 ,  C08F220/30 ,  C08F222/10

Abstract: The present invention provides a polymerizable composition containing a polymerizable liquid crystal compound represented by Formula (I) and an oxime compound, in the formula, A1 and A2 each represent a phenylene group or a trans-1,4-cyclohexylene group, L1 and L2 each represent single bond, —C(═O)O—, or —OC(═O)—, Q1 and Q2 each represent a polymerizable group or the like, m and n represent an integer of 0 to 2, X may represent —X3-Sp3-Q3 or two X's may be bonded to each other to form a fused ring, X3 represents —C(═O)O—, Sp1, Sp2, and Sp3 each represent single bond, an alkylene group, or the like, Q3 represents hydrogen atom, a cycloalkyl group, a polymerizable group, or the like, and l represents an integer of 0 to 4. The polymerizable composition hardly causes yellowing after curing and is useful for manufacturing a film and a half mirror for displaying a projection image.