The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2015
Filed:
Sep. 23, 2011
Applicants:
Dong-woo Yoo, Daejeon, KR;
Sung-ho Chun, Daejeon, KR;
Dai-seung Choi, Daejeon, KR;
Inventors:
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 32/08 (2006.01); C08F 24/00 (2006.01); C08F 26/06 (2006.01); C07C 69/734 (2006.01); C07C 69/738 (2006.01); C08F 132/08 (2006.01); C08G 61/08 (2006.01); C09K 19/00 (2006.01); C09K 19/56 (2006.01); G02F 1/1337 (2006.01);
U.S. Cl.
CPC ...
C08F 132/08 (2013.01); C08G 61/08 (2013.01); C08G 2261/3324 (2013.01); C08G 2261/418 (2013.01); C08G 2261/724 (2013.01); G02F 1/133788 (2013.01);
Abstract
Disclosed herein are a photoreactive polymer, and an alignment layer comprising the same that exhibit excellences in alignment rate and alignment stability. The photoreactive polymer comprises a cyclic olefin-based repeating unit with at least one photoreactive substituent, and the maximum absolute value of a variation in dichloric ratio per unit UV dose as given by d(dichloric ratio)/d(mJ/cm) upon exposure to a polarized UV radiation having a wavelength of 150 to 450 nm at a total exposure dose of 20 mJ/cmor less is at least 0.003.