公开(公告)号：US20210020870A1

公开(公告)日：2021-01-21

申请号：US16982040

申请日：2019-03-11

Applicant: ZEON CORPORATION

Inventor： Kazuhiro OSATO

IPC: H01L51/52 ,  G02B5/30

Abstract: An optically anisotropic layered body including a first optically anisotropic layer and a second optically anisotropic layer, wherein the first optically anisotropic layer satisfies the following formula (1), the second optically anisotropic layer satisfies the following formula (2), and the optically anisotropic layered body satisfies the following formulae (3) and (4): nx1≥ny1>nz1  Formula (1), ny2

公开(公告)号：US20180370184A1

公开(公告)日：2018-12-27

申请号：US16062215

申请日：2016-12-14

Applicant: ZEON CORPORATION

Inventor： Manabu ITO ,  Kazuhiro OSATO

IPC: B32B7/02 ,  C09K19/38 ,  G02B5/30 ,  G02F1/13363 ,  H01L51/50 ,  H05B33/02

Abstract: An optically anisotropic layer obtained by curing a liquid crystal composition containing a photopolymerizable liquid crystal compound, wherein a ratio of the photopolymerizable liquid crystal compound in the optically anisotropic layer is 25% by weight or less, and absorption values of the optically anisotropic layer satisfy specific relationship, the values being at local maximum absorption wavelengths for polarized light parallel to an orientation direction of the optically anisotropic layer and at local maximum absorption wavelengths for polarized light perpendicular to the orientation direction of the optically anisotropic layer within each of a first wavelength range of 230 nm or more and less than 300 nm and a second wavelength range of 300 nm or more and 400 nm or less.

公开(公告)号：US20220177419A1

公开(公告)日：2022-06-09

申请号：US17651810

申请日：2022-02-21

Applicant: ZEON CORPORATION

Inventor： Masakazu SAITO ,  Kazuhiro OSATO ,  Masashi AIMATSU ,  Kei SAKAMOTO

IPC: C07C251/88 ,  B29D11/00 ,  C08F22/20 ,  C08F22/22 ,  C08F22/24 ,  C08J5/18 ,  G02B5/30 ,  C07D333/10 ,  C07D333/22

Abstract: A phase difference plate includes a phase difference plate P1 and a phase difference plate P2. An in-plane slow axis of the phase difference plate P1 is orthogonal to an in-plane slow axis of the phase difference plate P2. The phase difference plate P2 includes a layer of a liquid crystal material oriented in an in-plane direction. An in-plane retardation ReP2(λ) at a wavelength λ nm of the phase difference plate P2 satisfies the following formulae (e1) and (e2): {Re2(400)−Re2(550)}/{Re2(550)−Re2(700)} 1.13 (e2). An in-plane retardation ReP1(λ) of the phase difference plate P1 at a wavelength λ nm and the in-plane retardation ReP2(λ) of the phase difference plate P2 at the wavelength λ nm satisfy the following formulae (e4) and (e5): ReP1(550)>ReP2(550) (e4), and ReP1(400)/ReP1(700)

公开(公告)号：US20200233133A1

公开(公告)日：2020-07-23

申请号：US16482787

申请日：2018-02-14

Applicant: ZEON CORPORATION

Inventor： Kazuhiro OSATO ,  Masashi AIMATSU

IPC: G02B5/30 ,  H01L51/52 ,  B32B27/08 ,  B32B7/12 ,  B32B27/30

Abstract: An optically anisotropic layered body including a first optically anisotropic layer and a second optically anisotropic layer, wherein the first optically anisotropic layer satisfies 220 nm

公开(公告)号：US20200012026A1

公开(公告)日：2020-01-09

申请号：US16493029

申请日：2018-03-16

Applicant: ZEON CORPORATION

Inventor： Masakazu SAITO ,  Kazuhiro OSATO ,  Masashi AIMATSU ,  Kei SAKAMOTO

IPC: G02B5/30 ,  C08F22/24 ,  C08F22/22 ,  C08F22/20 ,  C08J5/18 ,  B29D11/00

Abstract: A phase difference plate including a layer of a liquid crystal material oriented in an in-plane direction, wherein an in-plane retardation Re(λ) at a wavelength λ nm of the phase difference plate satisfes the following formulae (e1) and (e2): {Re(400)-Re(550)}/{Re(550)-Re(700)} 1.13 (e2); as well as a multilayer phase difference plate including the same, a polarizing plate including the same, and an image display device including the same.

公开(公告)号：US20170299880A1

公开(公告)日：2017-10-19

申请号：US15512192

申请日：2015-09-16

Applicant: ZEON CORPORATION

Inventor： Kazuhiro OSATO

IPC: G02B27/28 ,  G02F1/1335 ,  G09G3/3208

CPC classification number: G02B27/286 ,  G02B5/3083 ,  G02F1/133528 ,  G02F1/13363 ,  G02F2001/133541 ,  G09G3/3208 ,  H01L51/50 ,  H05B33/02

Abstract: A circularly polarizing plate including a polarizing film, a λ/2 plate having a slow axis in a direction forming an angle of 22.5°±10° relative to an absorption axis of the polarizing film, a λ/4 plate having a slow axis in a direction. forming an angle of 90°±20° relative to the absorption axis of the polarizing film, in this order, wherein the λ/2 plate and the λ/4 plate have different wavelength dispersions, an NZ factor of the λ/2 plate is 1.00±0.05, and an NZ factor of the λ/4 plate is 0.00±0.05, a method for producing the same, and a method for using the same.

公开(公告)号：US20200012147A1

公开(公告)日：2020-01-09

申请号：US16321574

申请日：2017-08-02

Applicant: ZEON CORPORATION

Inventor： Kazuhiro OSATO ,  Masashi AIMATSU

IPC: G02F1/1335 ,  G02F1/1337 ,  G02F1/1339

Abstract: An optically anisotropic layered body including a first optically anisotropic layer and a second optically anisotropic layer, wherein each of refractive indices of the second optically anisotropic layer, in-plane retardations of the first optically anisotropic layer, thickness direction retardations of the second optically anisotropic layer, in-plane retardations of the optically anisotropic layered body, NZ factors of the optically anisotropic layered body, and thickness direction retardations Rth of the optically anisotropic layered body satisfies specific relationships.

公开(公告)号：US20190310726A1

公开(公告)日：2019-10-10

申请号：US16095749

申请日：2017-04-21

Applicant: ZEON CORPORATION

Inventor： Hiromasa HASHIMOTO ,  Kazuhiro OSATO ,  Takao KOBAYASHI

IPC: G06F3/044 ,  G02F1/1333 ,  G02B5/30 ,  H01L27/32

Abstract: A film sensor member for disposing on a visually recognizing side of a linear polarizer in an image display device including the linear polarizer, the member including a transparent electroconductive layer, a λ/4 plate, and a λ/2 plate in this order from the visually recognizing side, wherein the λ/4 plate is formed of a first thermoplastic resin containing an amorphous polymer having a glass transition temperature of 150° C. or higher or a crystallizable polymer having a melting point of 250° C. or higher, the λ/2 plate includes, in this order, a first outer layer formed of a second thermoplastic resin, an intermediate layer formed of a third thermoplastic resin containing an ultraviolet absorber, and a second outer layer formed of a fourth thermoplastic resin, and the λ/2 plate has an NZ factor of 1.1 to 3.0.

公开(公告)号：US20190235146A1

公开(公告)日：2019-08-01

申请号：US16078012

申请日：2017-02-24

Applicant: ZEON CORPORATION

Inventor： Kazuhiro OSATO

IPC: G02B5/30 ,  G02F1/13363 ,  H05B33/02 ,  G02F1/1335 ,  H01L51/50

CPC classification number: G02B5/3033 ,  G02B5/30 ,  G02F1/133528 ,  G02F1/13363 ,  G09F9/00 ,  H01L51/50 ,  H01L51/5012 ,  H05B33/02

Abstract: An image display device including a λ/4 plate, a λ/2 plate, a linear polarizer, and an image display element disposed in this order from a visual recognition side, wherein the λ/2 plate has an NZ factor NZh satisfying 1.5≤NZh.

公开(公告)号：US20180239199A1

公开(公告)日：2018-08-23

申请号：US15751251

申请日：2016-08-08

Applicant: ZEON CORPORATION

Inventor： Kazuhiro OSATO ,  Kazuki TAKAGI

IPC: G02F1/13363 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02B5/30

CPC classification number: G02F1/133634 ,  B29D11/00644 ,  B29D11/0073 ,  G02B5/3025 ,  G02B5/3033 ,  G02B5/3083 ,  G02F1/133514 ,  G02F1/133528 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/134363 ,  G02F2001/133635 ,  G02F2202/40

Abstract: A liquid crystal display device includes, in this order from a light source side: a first polarizer; a liquid crystal cell in which an azimuth orientation direction of a liquid crystal substance is altered by an electric field parallel to a display surface; and a second polarizer. Absorption axes of the first and second polarizers are disposed in directions orthogonal to each other. The absorption axis of the first polarizer and an orientation axis of molecules of the liquid crystal substance are disposed in parallel to each other. The device further includes: a first substrate layer between the liquid crystal cell and the first polarizer; and no substrate layer or a second substrate layer as only one layer between the liquid crystal cell and the second polarizer. An in-plane direction of an optical axis of the first substrate layer is parallel to the absorption axis of the first polarizer.