Leonhard Kurz Stiftung & Co Kg

Ovd Kinegram Ag

Polyic Gmbh & Co Kg

Rainer Stahl

Wayne Robert Tompkin

Klaus Ludwig

Harald Walter

Rene Staub

René Staub

Johannes Schad

Christian Schulz

Rouven Spiess

Steffen Weiss

Gerrit Hackl

The invention relates to a security element (), a security document () with at least one security element (), a transfer foil () with at least one security element () as well as a method for producing a security element (), wherein the security element has at least one layer () that is electrically alterable in its optical effect. It is here provided that the at least one layer () that is electrically alterable in its optical effect has liquid crystals () that can be oriented in an electric field, wherein the at least one layer () that is electrically alterable in its optical effect has rod-shaped dye molecules (), and the orientations of the longitudinal axes () of the rod-shaped dye molecules () are alterable depending on the orientations of the longitudinal axes () of the spatially adjacent liquid crystals () that can be oriented in the electric field, and/or wherein the liquid crystals () that can be oriented in the electric field are formed in such a way that the liquid crystals () that can be oriented in the electric field simultaneously act as dye molecules.

Security element

The invention relates to a method for producing a multilayer body, with the steps: The invention further relates to a multilayer body produced by means of such a method.

Multilayer body and method for producing same

The invention relates to a display device (), in particular in the form of a multi-layer film body. The display device () has, in a first area (), a first electrode (), a second electrode (), a third electrode () and a display layer () with a display material. The display layer () is arranged between the first electrode () and the second electrode (). The third electrode () is arranged on the side of the display layer () facing away from the first electrode (). The first electrode () is formed as an isolated electrode. The first electrode () overlaps both the second electrode () and the third electrode () at least in areas when viewed perpendicular to the plane spanned by the display layer ().

Display device

The invention relates to a multi-layered foil body () for marking a security document, in particular a banknote. The foil body () has at least one color filter layer () and at least one change layer () with an electrically controllable transmittance and/or an electrically controllable color.

Multi-layered foil body

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 &#x3bc;m in a direction perpendicular to the plane of the film body.

Security element for the identification of a security document using liquid crystal display driven with piezoelectric energy source and method for producing it

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Nuremberg, Germany

Rainer Stahl