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:
Jun. 06, 1995
Filed:
Dec. 07, 1993
Applicant:
Inventors:
Assignees:
Sharp Kabushiki Kaisha, Osaka, JP;
Chisso Corporation, Osaka, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
428-1 ; 359 75 ; 359 78 ;
Abstract
A liquid crystal display device wherein an orientation film is formed from a polyimide which is obtained by polymerization of an amine of the formula (I) ##STR1## and 1,2,4,5-benzenetetracarboxylic acid dianhydride as main components and ferroelectric liquid crystals are oriented in liquid crystal cell using said orientation film.
Itoh, Nobuyuki. (1995). Liquid crystal display device (U.S. Patent No. 5422148). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5422148
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