Recursive-reflective display devices
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United States of America Patent
Stats
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Jul 24, 2007
Grant Date -
Mar 2, 2006
app pub date -
Oct 8, 2003
filing date -
Oct 8, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a retroreflective display device comprising at least a surface-protective layer, information display layer, retroreflective layer and a back-protective layer, on or between these layers radio frequency identification unit or units enclosing radio frequency identification integrated circuit or circuits are disposed, and communication antenna or antennas which are connected to said radio frequency identification integrated circuit or circuits are installed. At the back of the retroreflective layer an illuminator is disposed. The retroreflective layer is retroreflective to the light coming from the front of the sign and is transmissive to the light from the interior of the sign.
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