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. 18, 2015
Filed:
Oct. 27, 2009
Bart Michiel DE Boer, Eindhoven, NL;
Thomas Jan DE Hoog, Eindhoven, NL;
Theodorus Petrus Henricus Gerardus Jansen, Eindhoven, NL;
Bart Michiel De Boer, Eindhoven, NL;
Thomas Jan De Hoog, Eindhoven, NL;
Theodorus Petrus Henricus Gerardus Jansen, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A device for measuring a geometry of a fluid meniscus includes a fluid chamber storing a first electrically conductive fluid and a second electrically insulating fluid. The fluids are mutually immiscible and define a fluid meniscus in between them. The device further includes a main electrowetting electrode and auxiliary electrowetting electrodes for controlling the geometry of the fluid meniscus. A voltage source provides a voltage between the main electrowetting electrode and the auxiliary electrowetting electrodes and a measurement circuit separately measures capacitances between the main electrowetting electrode and at least two of the auxiliary electrowetting electrodes. The measurement circuit includes a multiplexer for demodulating a signal indicative for the capacitances.