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. 25, 2014
Filed:
Sep. 16, 2008
Rainer Stahl, Nuremberg, DE;
Gerrit Hackl, Nuremberg, DE;
Steffen Weiss, Nuremberg, DE;
Klaus Ludwig, Erlangen, DE;
Johannes Schad, Furth, DE;
Rainer Stahl, Nuremberg, DE;
Gerrit Hackl, Nuremberg, DE;
Steffen Weiss, Nuremberg, DE;
Klaus Ludwig, Erlangen, DE;
Johannes Schad, Furth, DE;
Poly IC GmbH & Co. KG, Furth, DE;
Abstract
The invention relates to a security element for the identification of a security document, in particular a banknote, a valuable paper or a paper document, comprising at least one electrically controllable display element and at least one piezoelectric energy source which controls the at least one display element. The security element is formed by a flexible multilayered film body comprising the at least one electrically controllable display element containing a display layer having liquid crystals that can be oriented in an electric field, and comprising the at least one piezoelectric energy source which controls the at least one display element and has at least one layer composed of piezoelectric material, wherein the security element has a thickness of at most 70 μm in a direction perpendicular to the plane of the film body.