公开(公告)号：US20180282625A1

公开(公告)日：2018-10-04

申请号：US15768747

申请日：2016-10-13

Applicant: DIC Corporation

Inventor： Martin Chadt ,  Fumiaki Kodera ,  Hiroyuki Itou ,  Haruyoshi Takatsu ,  Hiroshi Hasebe ,  Isa Nishiyama ,  Yoshitaka Saito

IPC: C09K19/56 ,  C09K19/38

Abstract: Provided is a polymer which is capable of forming a liquid crystal alignment layer that combines an excellent alignment regulating force, high sensitivity with respect to polarized ultraviolet ray, and excellent durability. The polymer includes a side chain unit represented General Formula (I) and a side chain unit represented by General Formula (II), in which a polyamic acid or a polyimide is set as a main chain.

公开(公告)号：US20180037680A1

公开(公告)日：2018-02-08

申请号：US15517871

申请日：2015-09-29

Applicant: DIC Corporation

Inventor： Yoshitaka Saito ,  Kazuki Obi ,  Hiroyuki Itou ,  Kouji Sato ,  Hiroshi Hasebe ,  Masanao Takashima ,  Fumiaki Kodera

IPC: C08F20/40 ,  C08J5/18 ,  G02F1/1337 ,  B32B27/30

CPC classification number: C08F20/40 ,  B32B7/02 ,  B32B27/30 ,  B32B27/308 ,  B32B2457/206 ,  C08F220/30 ,  C08F222/10 ,  C08F2220/303 ,  C08F2222/102 ,  C08J5/18 ,  C08J2333/14 ,  G02B5/30 ,  G02F1/133711 ,  G02F1/133788 ,  Y10T428/10 ,  Y10T428/1005

Abstract: The invention provides an acrylic resin-based transparent substrate having an alignment layer spread thereon, wherein the photo-alignment layer and the substrate are kept tightly bonded to each other. The invention also provides a layered body having an acrylic resin-containing transparent substrate and, as formed on one surface of the transparent substrate by spreading and bonding thereto, a photo-alignment layer containing photo-responsive molecules capable of responding to light. According to the invention, there can be provided an acrylic resin-based transparent substrate having on the surface thereof, a photo-alignment layer having excellent adhesion force and containing photo-responsive molecules capable of responding to light.

公开(公告)号：US20180230385A1

公开(公告)日：2018-08-16

申请号：US15954045

申请日：2018-04-16

Applicant: DIC Corporation

Inventor： Fumiaki Kodera ,  Yoshitaka Saito ,  Hiroshi Hasebe ,  Masanao Takashima ,  Shuuhei Yamamoto ,  Kouzi Satou ,  Sayaka Nose ,  Kazuki Obi ,  Hiroyuki Itou

IPC: C09K19/56 ,  C07C245/08 ,  C08F220/30 ,  C08F222/20 ,  G02F1/1337

Abstract: A compound and a polymer which can each form a photo-alignment film having excellent ability of controlling alignment, a photo-alignment film obtained using the polymer and an optically anisotropic body and a liquid crystal display element each having the photo-alignment film are provided. A compound represented by the general formula (1). In the formula, P represents a polymerizable group, Z and Z1 represent divalent linking groups, A and A1 represent divalent cyclic groups, and X1 to X5 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a hydroxy group, a nitro group, a cyano group or an alkyl group having 1 to 40 carbon atoms which may have a substituent, provided that X1, X2, X4 and X5 are not simultaneously hydrogen atoms.

公开(公告)号：US20170088777A1

公开(公告)日：2017-03-30

申请号：US15316022

申请日：2015-05-26

Applicant: DIC CORPORATION

Inventor： Hiroshi Hasebe ,  Fumiaki Kodera ,  Masanao Takashima ,  Isa Nishiyama ,  Hiroyuki Itou ,  Yutaka Kadomoto ,  Kazuki Obi ,  Yoshitaka Saitou ,  Yuuichirou Tani ,  Keisuke Fujisawa

IPC: C09K19/56 ,  G02F1/1337 ,  C08F20/36

CPC classification number: C09K19/56 ,  C08F20/30 ,  C08F20/36 ,  C08F20/58 ,  C08F20/60 ,  C08F22/40 ,  C09K19/601 ,  C09K2019/0448 ,  G02F1/1337 ,  G02F1/133711 ,  G02F1/133788

Abstract: An object of the present invention is to provide a photoalignment layer with a more reliable absorption anisotropy parameter as a photoalignment layer that allows for reduced AC image-sticking. Specifically, provided is a photoalignment layer, obtained by exposure to polarized UV radiation, that has a maximum ΔA (=A1−A2, where A1 is the absorbance in a direction parallel to a vibration direction of the polarized UV radiation, and A2 is the absorbance in a direction parallel to the vibration direction of the polarized UV radiation) of 0.35 or more per micrometer of layer thickness in a range of 230 to 380 nm.

公开(公告)号：US10738242B2

公开(公告)日：2020-08-11

申请号：US15954045

申请日：2018-04-16

Applicant: DIC Corporation

Inventor： Fumiaki Kodera ,  Yoshitaka Saito ,  Hiroshi Hasebe ,  Masanao Takashima ,  Shuuhei Yamamoto ,  Kouzi Satou ,  Sayaka Nose ,  Kazuki Obi ,  Hiroyuki Itou

IPC: G02F1/1333 ,  C09K19/56 ,  C09K19/24 ,  C07C245/08 ,  C08F220/30 ,  C08F222/20 ,  C08F220/34 ,  C09K19/04 ,  G02F1/1337

Abstract: A compound and a polymer which can each form a photo-alignment film having excellent ability of controlling alignment, a photo-alignment film obtained using the polymer and an optically anisotropic body and a liquid crystal display element each having the photo-alignment film are provided. A compound represented by the general formula (1). In the formula, P represents a polymerizable group, Z and Z1 represent divalent linking groups, A and A1 represent divalent cyclic groups, and X1 to X5 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a hydroxy group, a nitro group, a cyano group or an alkyl group having 1 to 40 carbon atoms which may have a substituent, provided that X1, X2, X4 and X5 are not simultaneously hydrogen atoms.

公开(公告)号：US09708535B2

公开(公告)日：2017-07-18

申请号：US15316022

申请日：2015-05-26

Applicant: DIC CORPORATION

Inventor： Hiroshi Hasebe ,  Fumiaki Kodera ,  Masanao Takashima ,  Isa Nishiyama ,  Hiroyuki Itou ,  Yutaka Kadomoto ,  Kazuki Obi ,  Yoshitaka Saitou ,  Yuuichirou Tani ,  Keisuke Fujisawa

IPC: C08F12/20 ,  C08F20/00 ,  C08F12/24 ,  C08F12/26 ,  C09K19/56 ,  C08F20/36 ,  G02F1/1337

CPC classification number: C09K19/56 ,  C08F20/30 ,  C08F20/36 ,  C08F20/58 ,  C08F20/60 ,  C08F22/40 ,  C09K19/601 ,  C09K2019/0448 ,  G02F1/1337 ,  G02F1/133711 ,  G02F1/133788

Abstract: An object of the present invention is to provide a photoalignment layer with a more reliable absorption anisotropy parameter as a photoalignment layer that allows for reduced AC image-sticking. Specifically, provided is a photoalignment layer, obtained by exposure to polarized UV radiation, that has a maximum ΔA (=A1−A2, where A1 is the absorbance in a direction parallel to a vibration direction of the polarized UV radiation, and A2 is the absorbance in a direction parallel to the vibration direction of the polarized UV radiation) of 0.35 or more per micrometer of layer thickness in a range of 230 to 380 nm.