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:
Sep. 04, 2007
Filed:
Oct. 31, 2003
Applicant:
David Sikharulidze, Bristol, GB;
Inventor:
David Sikharulidze, Bristol, GB;
Assignee:
Hewlett Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/167 (2006.01); G02F 1/139 (2006.01);
U.S. Cl.
CPC ...
Abstract
A bistable nematic liquid crystal display device comprises two cell walls enclosing a layer of nematic liquid crystal material having finely divided solid particles dispersed therein. At least one electrode on each cell wall applies an electric field across at least some of the liquid crystal material. Surface alignments on the inner surface of both cell walls induce adjacent molecules of the liquid crystal material to adopt desired orientations. The liquid crystal material adopts two different stable molecular configurations according to the polarity of applied electric field pulses.