EP 2094503 B1 20110223 - SECURITY ARRANGEMENT WITH LIQUID-CRYSTAL LAYER
Title (en)
SECURITY ARRANGEMENT WITH LIQUID-CRYSTAL LAYER
Title (de)
SICHERHEITSANORDNUNG MIT FLÜSSIGKRISTALLSCHICHT
Title (fr)
AGENCEMENT DE SÉCURITÉ À COUCHE DE CRISTAUX LIQUIDES
Publication
Application
Priority
- EP 2007009686 W 20071108
- DE 102006054651 A 20061117
Abstract (en)
[origin: WO2008058670A1] The invention relates to a security arrangement for security papers, documents of value and the like, having a transparent security element (12) which has a first linear polarizer and a layer made of a cholesteric liquid-crystalline material arranged above the linear polarizer, and having a transparent verification element (14) which has a second linear polarizer crosswise in relation to the first linear polarizer, in which case, when the transparent security element (12) is positioned on the transparent verification element (14), the first and second linear polarizers form a dark background for the cholesteric liquid-crystal layer, wherein at least one of the linear polarizers contains a motif (20) which is in the form of patterns, symbols or a coding and becomes visible once the security element (12) has been positioned on the verification element (14).
IPC 8 full level
B42D 15/00 (2006.01)
CPC (source: EP US)
B42D 25/23 (2014.10 - US); B42D 25/29 (2014.10 - EP US); B42D 25/364 (2014.10 - US); B42D 25/391 (2014.10 - EP US); B42D 2033/26 (2022.01 - EP)
Citation (examination)
WO 2005037570 A2 20050428 - GIESECKE & DEVRIENT GMBH [DE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102006054651 A1 20080521; AT E499218 T1 20110315; DE 502007006563 D1 20110407; EP 2094503 A1 20090902; EP 2094503 B1 20110223; WO 2008058670 A1 20080522
DOCDB simple family (application)
DE 102006054651 A 20061117; AT 07819695 T 20071108; DE 502007006563 T 20071108; EP 07819695 A 20071108; EP 2007009686 W 20071108