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:
Apr. 15, 2003
Filed:
Jan. 05, 2001
Bengt Stebler, Göteborg, SE;
Dietrich Demus, Halle, DE;
Torbjörn Lagerwall, Göteborg, SE;
Lachezar Komitov, Göteborg, SE;
Ecsibeo AB, Göteborg, SE;
Abstract
An electrooptic device ( ), and the methods for manufacturing, including a liquid crystal material ( ) disposed between electroded flat glass or polymer substrates ( ) which have been precoated with a e.g. a chiral smectic surface layer ( ) in such way that the surface layer is able to mediate switching of the liquid crystal ( ) between different optical states. The chiral smectic surface layer can be a polymer, oligomer or monomer liquid crystal with paraelectric, ferroelectric, ferrielectric or antiferroelectric response, which is insoluble in the liquid crystal used for the bulk ( ) between the electroded substrates ( ). the switchable surface director enforces a certain orientation of the optic axis in the bulk liquid crystal ( ), which can be a conventional non-chiral or chiral nematic or smectic in a twisted or non-twisted configuration.