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:
Jul. 11, 1978
Filed:
Oct. 01, 1976
Applicant:
Inventors:
Philip Henry Wisbey, Colchester, GB;
George Elliot, Sandon near Chelmsford, GB;
Assignee:
The Marconi Company Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350333 ; 350335 ; 3403 / ;
Abstract
A liquid crystal display arrangement is provided with two liquid crystal cells containing twisted-nematic material, and positoned one cell behind the other. Both cells are between a pair of crossed polarizers, and the arrangement can be used to selectively reverse the contrast of a display or it can be used as a matrix display in which cross-talk between adjacent elements is minimized.