The multilayer film body and a method for producing a security element, security document, and the transfer film

The present invention relates to a multilayer film body (1), security documents, especially banknotes for marking security document is provided. The film (1) having at least a color filter layer (2) and at least one change layer (4), said change layer transmittance and / or electrically controllable color properties having an electrically controllable. The change layer (4) may have a liquid crystal (15), for example PDLC layer can be oriented in an electric field. The film (1) preferably comprises two different ground color of the color filter layer (2,3) and a set change layer (4) between the two color filter layer. Further, the present invention relates to a security element (10), the security element having at least one of said film element and a control change layer (4) of the piezoelectric energy source (8).