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:
May. 18, 1999
Filed:
Sep. 24, 1996
Applicant:
Inventor:
Antonius G Verhulst, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 98 ; 345 97 ;
Abstract
In liquid crystal display devices based on smectic LC material having a high polarization (Deformed Helix FLC, twisted FLC, monostable FLC, electroclinic smectic A LC and antiferroelectric LC), the memory effect in, for example, monitor or video applications is eliminated by presenting compensation voltages in matrix displays based on MIMs, TFTs or diodes, dependent on the data in a previous frame, so that the polarization within a cell always switches to the correct value.