公开(公告)号：US20230176252A1

公开(公告)日：2023-06-08

申请号：US18162359

申请日：2023-01-31

Applicant: FUJIFILM Corporation

Inventor： Yuta FUKUSHIMA ,  Shinpei YOSHIDA ,  Yuta TAKAHASHI ,  Keisuke KODAMA

IPC: G02B1/111 ,  G02B5/30

CPC classification number: G02B1/111 ,  G02B5/3016 ,  H10K59/8791

Abstract: The present invention provides an optically anisotropic layer which has a plurality of regions in which alignment states of a liquid crystal compound are different in a thickness direction and in which peeling is unlikely to occur in the layer. The optically anisotropic layer of the present invention is an optically anisotropic layer formed of a liquid crystal compound, in which the optically anisotropic layer contains a leveling agent and satisfies a predetermined requirement in a profile of a secondary ion intensity derived from the leveling agent in a depth direction, which is obtained by analyzing components of the optically anisotropic layer in a depth direction by time-of-flight secondary ion mass spectrometry while irradiating the optically anisotropic layer with an ion beam from one surface of the optically anisotropic layer to the other surface of the optically anisotropic layer.

公开(公告)号：US20240427208A1

公开(公告)日：2024-12-26

申请号：US18828773

申请日：2024-09-09

Applicant: FUJIFILM Corporation

Inventor： Shinpei YOSHIDA ,  Yuta TAKAHASHI ,  Kentaro YAMURA ,  Keisuke KODAMA

IPC: G02F1/137 ,  G02F1/1333 ,  G02F1/13363 ,  G02F1/1337

Abstract: An optically anisotropic layer formed of a liquid crystal compound, having first and second layers in direct contact with different alignment states, the first layer is formed by fixing an alignment state of the liquid crystal compound in homogeneous alignment, and the second layer in homeotropic alignment, and the optically anisotropic layer satisfies a relationship of Expression (2A) Xmax/Xmin

公开(公告)号：US20240385360A1

公开(公告)日：2024-11-21

申请号：US18789111

申请日：2024-07-30

Applicant: FUJIFILM Corporation

Inventor： Yuta FUKUSHIMA ,  Shinpei YOSHIDA ,  Tomonori MIMURA ,  Shun KITAWAKI ,  Yuta TAKAHASHI

IPC: G02B5/30

Abstract: An optical film having good alignment properties of a liquid crystal compound in an optically anisotropic layer while suppressing an occurrence of bright point defects, an optically anisotropic layer, a composition for forming an alignment film, a method for producing an optical film, a polarizing plate, and an image display device. The optical film includes an alignment film and an optically anisotropic layer, in which the optically anisotropic layer is a layer formed of a composition for forming an optically anisotropic layer, containing a polymerizable liquid crystal compound, and the alignment film is a film formed of a composition for forming an alignment film, containing an additive having an alkyl group having 5 to 29 carbon atoms and a polymer having no alkyl group having 5 to 29 carbon atoms.

公开(公告)号：US20230225176A1

公开(公告)日：2023-07-13

申请号：US18177563

申请日：2023-03-02

Applicant: FUJIFILM Corporation

Inventor： Yasukazu KUWAYAMA ,  Yuta FUKUSHIMA ,  Shinpei YOSHIDA

IPC: H10K59/80 ,  G02B5/30

CPC classification number: H10K59/8791 ,  G02B5/3016

Abstract: The present invention provides a polarizing plate that exhibits excellent black tightness in a front direction even after an organic EL display device obtained by bonding the polarizing plate to an organic EL display panel is exposed to a high temperature environment for a long period of time; and an organic EL display device. The polarizing plate of the present invention is a polarizing plate having a polarizer formed of a composition containing a first liquid crystal compound and a dichroic substance, and an optically anisotropic layer disposed adjacent to the polarizer and formed of a composition containing a second liquid crystal compound, in which a content of the dichroic substance in the polarizer is 40% by mass or less with respect to a total mass of the polarizer.

公开(公告)号：US20230200192A1

公开(公告)日：2023-06-22

申请号：US18169694

申请日：2023-02-15

Applicant: FUJIFILM Corporation

Inventor： Yoshiaki HISAKADO ,  Yuta TAKAHASHI ,  Shinpei YOSHIDA

IPC: H10K59/80 ,  G02B5/30

CPC classification number: H10K59/8793 ,  G02B5/3016 ,  G02B5/3083

Abstract: A circularly polarizing plate in which tint unevenness in an oblique direction can be suppressed when the circularly polarizing plate is applied to an organic EL display device. The circularly polarizing plate includes a polarizer and a phase difference film laminated on one surface side of the polarizer, in which it has a moisture content of 1.8% or less, an absolute value of a chromaticity a* and chromaticity b* are 10 or less at any azimuthal angle, in a case where the chromaticity a* and b* are measured at all azimuthal angles with a polar angle of 40° from a normal direction of the circularly polarizing plate of a laminate when a reflectivity is measured at all azimuthal angles with a polar angle of 40° from the normal direction of the circularly polarizing plate of the laminate, the reflectivity is 3.0% or less at any azimuthal angle.

公开(公告)号：US20200161589A1

公开(公告)日：2020-05-21

申请号：US16750624

申请日：2020-01-23

Applicant: FUJIFILM Corporation

Inventor： Toshihiro KONISHI ,  Kenta YAMAZAKI ,  Shinpei YOSHIDA ,  Ryo SATAKE ,  Hiroyuki OKUSA

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/00

Abstract: An organic EL display device is provided in which a change in tint is reduced in a bent portion. This organic EL display device is an organic electroluminescent display device including, from a viewing side, a circularly polarizing plate, a first adhesion layer, and a bendable organic electroluminescent display panel, in which the circularly polarizing plate includes, from the viewing side, a linear polarizer, a second adhesion layer, and a phase difference layer functioning as a λ/4 plate, a complex modulus of elasticity of the first adhesion layer is 2.50×105 Pa or less, the first adhesion layer is thicker than the second adhesion layer, and an absorption axis of the linear polarizer is positioned at an angle of 0°±30° or 90°±30° with respect to an extension direction of a ridge line formed in a case where the organic electroluminescent display device is bent.

公开(公告)号：US20230204838A1

公开(公告)日：2023-06-29

申请号：US18169689

申请日：2023-02-15

Applicant: FUJIFILM Corporation

Inventor： Yuta TAKAHASHI ,  Shinpei YOSHIDA

IPC: G02B5/30

CPC classification number: G02B5/3016

Abstract: Provided is an optical film in which black tinting is suppressed in front and oblique directions when the optical film is used as a circularly polarizing plate in an organic EL display device. The optical film is an elongated optical film having optically anisotropic layers (A), (B), and (C), in this order, in which layer (A) is formed by fixing a vertically aligned disk-like liquid crystal compound, layer (B) is formed by fixing a twist-aligned rod-like liquid crystal compound with a thickness direction as a helical axis, layer (C) is formed by fixing a vertically aligned rod-like liquid crystal compound, an in-plane slow axis of layer (A) is parallel to an in-plane slow axis on a surface of layer (B) on a layer (A) side, and layers (A) and (B) are disposed such that the in-plane slow axes thereof satisfy a predetermined positional relationship.

公开(公告)号：US20230194763A1

公开(公告)日：2023-06-22

申请号：US18169687

申请日：2023-02-15

Applicant: FUJIFILM Corporation

Inventor： Yuta TAKAHASHI ,  Shinpei YOSHIDA

IPC: G02B5/30

CPC classification number: G02B5/3016 ,  G02B5/305

Abstract: Provided is an optical film having excellent adhesiveness; a circularly polarizing plate; and an organic EL display device. The optical film has three layers of an optically anisotropic layer (A), an optically anisotropic layer (B), and an optically anisotropic layer (C), each of which is formed by fixing an aligned liquid crystal compound, in which at least one of the optically anisotropic layer (A) or the optically anisotropic layer (B) is directly laminated with the optically anisotropic layer (C), the optically anisotropic layer (C) is a layer that contains a photo-alignment polymer having a photo-alignment group and is formed by fixing a vertically aligned rod-like liquid crystal compound or a horizontally aligned disk-like liquid crystal compound, and the photo-alignment polymer is present on the surface of the optically anisotropic layer (C) in contact with the optically anisotropic layer (A) or the optically anisotropic layer (B).

公开(公告)号：US20220204855A1

公开(公告)日：2022-06-30

申请号：US17670906

申请日：2022-02-14

Applicant: FUJIFILM Corporation

Inventor： Keisuke KODAMA ,  Yuki FUKUSHIMA ,  Shunya KATOH ,  Yuta TAKAHASHI ,  Shinpei YOSHIDA ,  Satoshi YANOKUCHI ,  Akira MARUYAMA ,  Hiroyuki HAGIO

IPC: C09K19/58 ,  C09K19/20 ,  G02B5/30 ,  H01L51/52

Abstract: Provided is a liquid crystal composition capable of forming an optically anisotropic layer, and method thereof, in which a variation in a twisted angle of liquid crystal compound in an in-plane direction is suppressed an optical film, and a circularly polarizing plate for an organic EL display. The liquid crystal composition contains a liquid crystal, optically active compound A which is a photosensitive optically active compound whose helical twisting power changes upon irradiation with light and has a molar absorption coefficient of 5,000 M−1·cm−1 or more with respect to light having a wavelength of 365 nm, and an optically active compound B having a molar absorption coefficient with respect to light having a wavelength of 365 nm smaller than the molar absorption coefficient of the optically active compound A, in which a mass content ratio of the optically active compound A to the liquid crystal compound is less than 0.01.

公开(公告)号：US20200052247A1

公开(公告)日：2020-02-13

申请号：US16658692

申请日：2019-10-21

Applicant: FUJIFILM Corporation

Inventor： Shinpei YOSHIDA

IPC: H01L51/52 ,  H01L27/32 ,  H05B33/04 ,  H05B33/02 ,  H01L51/50 ,  G09F9/30 ,  G09F9/00 ,  G02B5/30 ,  G06F3/041

Abstract: An organic electroluminescence display device includes, from a visible side, at least: a circular polarization plate; and an organic electroluminescence display element having a pair of electrodes and an organic light emitting layer sandwiched therebetween. A high refractive index layer has a refractive index of greater than 1.7 and less than 2.1 is disposed between the plate and one of the electrodes on the visible side, the plate has a polarizer, a λ/2 plate, and a λ/4 plate in this order from the visible side, a retardation RthA (550) of the λ/2 plate in a thickness direction at a wavelength of 550 nm is within a range of greater than −120 nm and less than −40 nm, and a retardation RthB (550) of the λ/4 plate in a thickness direction at a wavelength of 550 nm is within a range of greater than −60 nm and less than 20 nm.