公开(公告)号：US20170088777A1

公开(公告)日：2017-03-30

申请号：US15316022

申请日：2015-05-26

申请人： DIC CORPORATION

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

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

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

摘要： 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：US09708535B2

公开(公告)日：2017-07-18

申请号：US15316022

申请日：2015-05-26

申请人： DIC CORPORATION

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

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

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

摘要： 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.