Title:
LIQUID CRYSTAL ALIGNMENT FILM
Document Type and Number:
WIPO Patent Application WO/2015/186562
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a photoalignment film that can suppress AC burn-in and is provided with an absorption anisotropy parameter with higher reliability. Specifically, the photoalignment film is obtained by irradiation with polarized UV light, and is characterized by ΔA (= A1 - A2: A1 being absorbency in a direction parallel to the direction of oscillation of the polarized UV light and A2 being absorbency in a direction parallel to the direction of oscillation of the polarized UV light) per micron of film thickness having a local maximum value of 0.35 or greater in the range of 230 - 380 nm.
Inventors:
HASEBE HIROSHI (JP)
KODERA FUMIAKI (JP)
TAKASHIMA MASANAO (JP)
NISHIYAMA ISA (JP)
ITOU HIROYUKI (JP)
KADOMOTO YUTAKA (JP)
OBI KAZUKI (JP)
SAITOU YOSHITAKA (JP)
TANI YUUICHIROU (JP)
FUJISAWA KEISUKE (JP)
KODERA FUMIAKI (JP)
TAKASHIMA MASANAO (JP)
NISHIYAMA ISA (JP)
ITOU HIROYUKI (JP)
KADOMOTO YUTAKA (JP)
OBI KAZUKI (JP)
SAITOU YOSHITAKA (JP)
TANI YUUICHIROU (JP)
FUJISAWA KEISUKE (JP)
Application Number:
PCT/JP2015/065039
Publication Date:
December 10, 2015
Filing Date:
May 26, 2015
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
G02F1/1337; C08F12/22; C08F20/30; C08F20/36; C08F20/58; C08F20/60; C08F22/40
Domestic Patent References:
| WO2013081066A1 | 2013-06-06 | |||
| WO2011122598A1 | 2011-10-06 |
Other References:
NOBUHIRO KAWATSUKI ET AL.: "Photocontrol of birefringence and in-plane molecular orientation in copolymer liquid crystal films with 4-methoxyazobenzene and photo-cross- linkable side groups", MACROMOLECULAR CHEMISTRY AND PHYSICS, vol. 204, no. 4, 2003, pages 584 - 590, XP002315842, ISSN: 1022-1352
Attorney, Agent or Firm:
KONO MICHIHIRO (JP)
Michihiro Kono (JP)
Michihiro Kono (JP)
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