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:
Nov. 22, 1977
Filed:
Nov. 18, 1974
Applicant:
Inventors:
Frederic Jay Kahn, Palo Alto, CA (US);
Gary Newton Taylor, Fanwood, NJ (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, N. J. 07974, US;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
3501 / ; 252299 ;
Abstract
The use of dopants enhances optical contrast and range of writing speeds in liquid crystal display devices. Such dopants are characterized by greater solubility in the isotropic phase than in the liquid-crystalline phase of a liquid crystal material.