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:
Aug. 26, 2014
Filed:
Nov. 16, 2009
Jean-louis DE Bougrenet DE LA Tocnaye, Guilers Kerhuo, FR;
Bertrand Caillaud, Brest, FR;
Emmanuel Daniel, Le Relecq Kerhuon, FR;
Robert Bellini, Brest, FR;
Olivier Castany, Plouzane, FR;
Jean-Louis De Bougrenet De La Tocnaye, Guilers Kerhuo, FR;
Bertrand Caillaud, Brest, FR;
Emmanuel Daniel, Le Relecq Kerhuon, FR;
Robert Bellini, Brest, FR;
Olivier Castany, Plouzane, FR;
Institut Telecom/Telecom Bretagne, Brest, FR;
Abstract
An optical shuttering device is provided, which includes an optical cell with a liquid crystal material between first and second transparent substrates and controlled by an electronic switching circuit. The switching circuit includes a power supply module, providing a control voltage, and a switching element mounted in series between the power supply module and the cell, making it possible to switch the cell between an on state and an off state. The electronic switching circuit furthermore includes a current source mounted in series between the power supply module and the switching element. The substrates preferably have different thickness and material.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile