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. 15, 2009
Filed:
Nov. 25, 2004
Cecile Joubert, Orsay, FR;
Daniel Stoenescu, Orsay, FR;
Alexandre Carton, Calais, FR;
Patrice Davi, Sevres, FR;
Cecile Joubert, Orsay, FR;
Daniel Stoenescu, Orsay, FR;
Alexandre Carton, Calais, FR;
Patrice Davi, Sevres, FR;
Nemoptic, Magny les Hameaux, FR;
Abstract
A device nematic liquid crystal display device has two stable states corresponding to two liquid crystal molecule textures whose torsion differs by 150° to 180° in terms of absolute value. The device includes two polarizers (), one () of which is placed on the observer side, the other () being placed on the opposite side of the liquid crystal cell. The orientation of the two polarizers is offset by a value which is equal to the rotatory power of the cell+/−Π/2, the rotatory power corresponding to the most twisted texture effect.