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:
Aug. 01, 2017
Filed:
Aug. 27, 2013
Lg Chem, Ltd., Seoul, KR;
Dai Seung Choi, Daejeon, KR;
Dong Woo Yoo, Daejeon, KR;
Sung-Ho Chun, Daejeon, KR;
Hyeong Bin Jang, Daejeon, KR;
Mi Ra Hong, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
This invention relates to a photo-alignment copolymer which enables the formation of an optical anisotropic film that exhibits superior optical anisotropy, an optical anisotropic film using the photo-alignment copolymer and a method of manufacturing the optical anisotropic film. The photo-alignment copolymer includes both of a photo-alignment repeating unit having a photo-reactive functional group such as a cinnamate-based functional group, a chalcone-based functional group, an azo-based functional group or a coumarin-based functional group, and a repeating unit having a specific structure able to increase optical anisotropy.