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. 29, 2005
Filed:
Apr. 30, 2003
David Sikharulidze, Bristol, GB;
David Sikharulidze, Bristol, GB;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A bistable liquid crystal device is made from a cell having first and second opposed spaced-apart cell walls enclosing a layer of nematic liquid crystal material having a photopolymerisable polymer precursor dissolved therein. Electrodes for applying an electric field across at least some of the liquid crystal material are on at least one cell wall. The inner surface of at least the first cell wall has a grating alignment structure. The cell is illuminated to photopolymerize the polymer precursor through the first cell wall. This causes polymerization close to the first cell wall and deposition of the resulting polymeric material as a coating on the grating alignment structure on the first cell wall.