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：US20220206203A1

公开(公告)日：2022-06-30

申请号：US17698500

申请日：2022-03-18

Applicant: FUJIFILM Corporation

Inventor： Satoshi YANOKUCHI ,  Shinpei YOSHIDA ,  Yuta TAKAHASHI

IPC: G02B5/30 ,  H01L51/52

Abstract: Provided is an optical film that has a thin thickness, is suitable in terms of continuous productivity, and exhibits suppressed tinting of black color in a front direction and an oblique direction in a case of being used as a circularly polarizing plate in an organic EL display device; a circularly polarizing plate; and an organic EL display device. The optical film includes an elongated support, and a first, a second, and a third optically anisotropic layer in this order, in which a thickness of the elongated support is 10 to 45 μm, the first optically anisotropic layer is formed of a rod-like liquid crystal compound, the second optically anisotropic layer is formed by fixing a twist-aligned liquid crystal compound having a helical axis in a thickness direction, the third optically anisotropic layer is formed of a liquid crystal compound, and each optically anisotropic layer exhibits predetermined optical characteristics.

公开(公告)号：US20220171109A1

公开(公告)日：2022-06-02

申请号：US17670878

申请日：2022-02-14

Applicant: FUJIFILM Corporation

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

IPC: G02B5/30 ,  C09K19/38

Abstract: Provided is a method for producing an optically anisotropic layer, with a polarizer, which has a plurality of regions in which alignment states of a liquid crystal compound are fixed and different from one another; laminate, with a polarizer; and a composition. The method includes: 1) forming a composition layer containing a chiral agent containing at least a photosensitive chiral agent and a polymerizable liquid crystal compound on a substrate, 2) subjecting the composition layer to a heat treatment, 3) subjecting the composition layer to light irradiation under oxygen concentration of 1% by volume or more, after step 2), and 4) subjecting the composition layer to a curing treatment to form an optically anisotropic layer, and 5) carrying out step 3) under heating conditions, or subjecting the composition layer to a heat treatment between step 3) and step 4), with a predetermined amount of chiral agent.

公开(公告)号：US20220171096A1

公开(公告)日：2022-06-02

申请号：US17670921

申请日：2022-02-14

Applicant: FUJIFILM Corporation

Inventor： Akira MARUYAMA ,  Keisuke KODAMA ,  Tetsuro OTSUKA ,  Hiroyuki HAGIO ,  Yuta TAKAHASHI ,  Shinpei YOSHIDA ,  Satoshi YANOKUCHI

IPC: G02B1/11 ,  H01J49/40 ,  G02F1/137 ,  C09K19/04 ,  G02F1/1337

Abstract: Provided is an optical film with a resin substrate adhered to an optically anisotropic layer and suppression of occurrence of optical defects in the optically anisotropic layer. The optical film has a resin substrate having an alignment regulating force and an optically anisotropic layer arranged thereon, in which the optically anisotropic layer contains a liquid crystal compound and a compound having a heteroatom different from the liquid crystal compound, and in a case where a surface of the optical film on an optically anisotropic layer side thereof is a first surface and a surface of the optical film on a resin substrate side thereof is a second surface, and components of the optical film in a depth direction are analyzed by time-of-flight secondary ion mass spectrometry while irradiating the optical film with an ion beam from the first surface toward the second surface, the obtained profile satisfies a predetermined requirement.