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. 21, 1992
Filed:
Jul. 30, 1990
Applicant:
Inventors:
Yukiko Ichimura, Tenri, JP;
Kato Shinji, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; G02F / ;
U.S. Cl.
CPC ...
25229901 ; 359102 ;
Abstract
An improved supertwisted nematic liquid crystal display device which comprises a pair of glass substrates each having an electrode and an orientation film formed on the surface of the electrode, and a liquid crystal composition comprising a specific base liquid crystal and optically active substance added thereto and interposed between the glass substrates so that the liquid crystal molecules have a twist angle .phi. of 210.degree. to 270.degree..