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:
Apr. 23, 2013
Filed:
Dec. 31, 2007
Tae-hyoung Kwak, Goyang, KR;
Dong-seon Uh, Seoul, KR;
Jae-min OH, Suwon, KR;
Jae-deuk Yang, Osan, KR;
Tae-Hyoung Kwak, Goyang, KR;
Dong-Seon Uh, Seoul, KR;
Jae-Min Oh, Suwon, KR;
Jae-Deuk Yang, Osan, KR;
Cheil Industries Inc., Gumi-si, KR;
Abstract
The present invention provides a liquid crystal photoalignment agent that includes a compound selected from the group consisting of a polyamic acid having a predetermined chemical formula, a polyimide polymer having a predetermined chemical formula, and a combination thereof, and a polyimide photopolymer. The liquid crystal photoalignment agent shows a long life-span, stably maintains a pretilt angle, and shows improved after-image characteristics, liquid crystal alignment properties, and chemical resistance.