发明名称 Polarising liquid crystal device for security documents
摘要 A polarizing liquid crystal device comprises a substrate, at least one photo-alignment layer which is uniformly aligned with a polarized light source and a nematic liquid crystal later applied to the photo-alignment later. A latent image which is viewable under cross-polarizers is formed by the photo-alignment layer and the liquid crystal later without the aid of a mask by a variable printing or laser writing process.
申请公布号 AUPS301902(D0) 申请公布日期 2002.07.11
申请号 AU2002PS03019 申请日期 2002.06.18
申请人 SECURENCY PTY. LTD. 发明人
分类号 G02F1/1337 主分类号 G02F1/1337
代理机构 代理人
主权项
地址