发明名称 Security element having a motif producing liquid crystal layer
摘要 The unit (20) has a motif layer produced from a liquid crystal material (26). The liquid crystal material has a homogeneous orientation (32) in one motif-producing zone and has an isotropic or homeotropic orientation in another motif-producing zone, so that a motif produced by the zones is visible when viewed through a polarizer. An inorganic adjustment layer (24) is formed from aluminum or from aluminium oxide, and a metallic reflector is formed from a metallized plastic foil. The material is arranged over an adjustment layer, which is formed from a linear photopolymer. An independent claim is also included for a method for manufacturing a security unit.
申请公布号 EP2261053(B1) 申请公布日期 2012.01.18
申请号 EP20100008899 申请日期 2007.11.27
申请人 GIESECKE & DEVRIENT GMBH 发明人 BURCHARD, THEODOR, DR.;HOFFMUELLER, WINFRIED, DR.
分类号 B42D15/00 主分类号 B42D15/00
代理机构 代理人
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