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:
Dec. 10, 2002
Filed:
Apr. 07, 2000
Applicant:
Inventors:
Wayne M. Gibbons, Bear, DE (US);
Patricia A. Rose, Wilmington, DE (US);
Paul J. Shannon, Exton, PA (US);
Hanxing Zheng, Wilmington, DE (US);
Assignee:
Elsicon, Inc., Newark, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D 3/06 ; B05D 5/06 ; C09K 1/902 ; C09K 1/956 ;
U.S. Cl.
CPC ...
B05D 3/06 ; B05D 5/06 ; C09K 1/902 ; C09K 1/956 ;
Abstract
The present invention provides novel polyamic acids and polyimide optical alignment layers for inducing alignment of a liquid crystal medium. The novel compositions comprise crosslinking diamines containing a C -C linear or branched hydrocarbon chains containing 1 to 4 carbon-carbon double bonds. The invention further describes liquid crystal displays comprising the novel polyimide optical alignment layers.