发明名称 |
Multi-layered foil body |
摘要 |
The invention relates to a multi-layered foil body (1) for marking a security document, in particular a banknote. The foil body (1) has at least one colour filter layer (2) and at least one change layer (4) with an electrically controllable transmittance and/or an electrically controllable colour. The change layer (4) can have liquid crystals (15), which are alignable in an electric field, such as a PDLC layer. The foil body (1) preferably comprises two differently coloured colour filter layers (2, 3) and a change layer (4) which is disposed therebetween. The invention furthermore relates to a security element (10) having at least one aforementioned foil body and a piezoelectric energy source (8) which controls the change layer (4). |
申请公布号 |
AU2012280498(A1) |
申请公布日期 |
2014.01.09 |
申请号 |
AU20120280498 |
申请日期 |
2012.06.26 |
申请人 |
LEONHARD KURZ STIFTUNG & CO. KG;OVD KINEGRAM AG |
发明人 |
STAHL, RAINER;TOMPKIN, WAYNE ROBERT;WALTER, HARALD |
分类号 |
G02F1/1334;B42D15/00;B42D15/10;G02F1/1335;G02F1/15 |
主分类号 |
G02F1/1334 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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