Title:
PHOTOALIGNMENT POLYMER, AND ALIGNMENT LAYER AND LIQUID CRYSTAL RETARDATION FILM COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2014/038868
Kind Code:
A1
Abstract:
The present invention relates to a photoalignment polymer in which an alignment direction according to a polarization direction can be easily changed, and which photoalignment polymer can be desirably applied to an alignment layer or the like of a stereoscopic display device. The present invention also relates to an alignment layer and a liquid crystal retardation film comprising the photoalignment polymer. The photoalignment polymer comprises a cyclic olefin-based repeating unit substituted with one or more photoreactive functional groups. The photoalignment polymer has an absorption rate (AR) of 0.02 or higher defined by a specific formula when primary photoalignment is performed by radiating first polarized UV light having a wavelength of 280 to 315nm and a first polarization direction in the total quantity of light of 60 mJ/cm2 or less, and secondary photoalignment is performed by radiating second polarized UV light having a wavelength of 280 to 315nm and a second polarization direction which is changed by 90° from the first polarization direction in the total quantity of light of 60 mJ/cm2 or less.
Inventors:
HAN JEONG-YOON (KR)
YOO DONG-WOO (KR)
LEE SUNG-KYOUNG (KR)
CHUN SUNG-HO (KR)
CHOI DAI-SEUNG (KR)
YOO DONG-WOO (KR)
LEE SUNG-KYOUNG (KR)
CHUN SUNG-HO (KR)
CHOI DAI-SEUNG (KR)
Application Number:
PCT/KR2013/008025
Publication Date:
March 13, 2014
Filing Date:
September 05, 2013
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08F32/08; C08G61/02; C08J5/18; G02F1/1337
Foreign References:
| KR20120069652A | 2012-06-28 | |||
| KR20100083103A | 2010-07-21 | |||
| KR19990045029A | 1999-06-25 | |||
| KR19990030881A | 1999-05-06 | |||
| KR20030095403A | 2003-12-18 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (649-10 Yoksam-dongKangnam-ku, Seoul 135-080, KR)
Download PDF: