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. 30, 2010
Filed:
May. 28, 2008
David D. L. Wijngaards, Tegelen, NL;
Hans Reinten, Velden, NL;
Hendrik J. Stolk, Bergen, NL;
Alex N. Westland, Baarlo, NL;
David D. L. Wijngaards, Tegelen, NL;
Hans Reinten, Velden, NL;
Hendrik J. Stolk, Bergen, NL;
Alex N. Westland, Baarlo, NL;
OCE-Technologies B.V., Venlo, NL;
Abstract
A piezoelectric actuator having a bottom electrode attached to a membrane, a piezoelectric layer on the bottom electrode, and a top electrode formed on the piezoelectric layer, wherein the bottom electrode extends substantially over the entire bottom surface of the piezoelectric layer, and at least a peripheral portion of a top surface of the piezoelectric layer and side faces of that layer are covered with an insulating layer, and wherein in the peripheral portion of the top surface of the piezoelectric layer the top electrode is superposed on the insulating layer.