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:
May. 23, 2000
Filed:
Dec. 09, 1997
Applicant:
Inventors:
Han-sung Yu, Suwon, KR;
Seong-han Yu, Seoul, KR;
Assignee:
Samsung Display Devices Co. Ltd., Kyungki-do, KR;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08L / ; G02F / ; G02F / ;
U.S. Cl.
CPC ...
525178 ; 525179 ; 525422 ; 528170 ; 528353 ; 428-1 ; 4284735 ; 349-1 ; 349123 ; 349127 ; 349193 ;
Abstract
An optical alignment composition including a first polymer selected from a cinnamate-series polymer and a coumarin-series polymer, and a second polymer selected from polyimide having a long-chain alkyl group at its side chains and polyimide having an alkyl group at its both ends, an alignment layer formed using the same, and a liquid crystal display having the alignment layer are provided. According to the present invention, the thermal stability of the alignment layer and pretilt angle characteristic of the liquid crystal are improved.