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:
Aug. 03, 1976
Filed:
Aug. 19, 1974
Applicant:
Inventors:
Assignee:
Xerox Corporation, Stamford, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
3501 / ;
Abstract
A liquid crystalline composition comprising an optically active material and a nematic liquid crystalline material having negative dielectric anisotropy and optionally an ionizable salt, and capable of undergoing the electrohydrodynamic induced transition from the Grandjean texture to the focal-conic texture, is initially provided in the Grandjean Texture. Current is passed through the liquid crystalline composition up to its region of maximum response to electrical stimulus. A second current is then passed through the liquid crystalline composition until at least a partial optical conversion is achieved in response to electrical stimulus of the liquid crystalline composition.