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:
Oct. 07, 2014
Filed:
Sep. 29, 2010
Stein Kuiper, Eindhoven, NL;
Johannes Wilhelmus Weekamp, Eindhoven, NL;
Stein Kuiper, Eindhoven, NL;
Johannes Wilhelmus Weekamp, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The invention relates to an electrowetting-on-dielectric device (). This is an electro wetting device comprising one or more cells, wherein each cell comprises an electrowetting composition of first and second immiscible fluids, the first fluid being an electrolytic solution (), a first electrode (), separated from the electrowetting composition by a dielectric (), and a voltage source () for applying an operating voltage difference between the first electrode () and the electrolytic solution to operate the electrowetting device. According to the invention, the first electrode () of the electrowetting-on-dielectric device () comprises a valve metal, and the electrolytic solution () is capable of anodizing the valve metal to form a metal oxide at the operating voltage difference. This provides the electrowetting-on-dielectric device () with self-repairing properties thereby preventing breakdown of the dielectric. As a result, the electrowetting device can be operated at a low voltage, and it has an improved reliability.