Patent ID: 6853412
Filing Date: 2005-02-08
Classification: G06K

Abstract:
1. A transaction card having machine readable information and a visible display comprising: a.) a card body; b.) machine readable information on the card body; c.) a flexible, addressable matrix display affixed to the card body for displaying information related to the machine readable information, the display including a flexible transparent substrate, first transparent patterned conductors formed over said flexible transparent substrate, pressure-insensitive polymer-dispersed cholesteric liquid crystal material, having a first planar reflective state and a second transparent focal conic state, which is responsive to an applied voltage to display information wherein said information persists when the voltage is removed, wherein said pressure-insensitive polymer-dispersed cholesteric liquid crystal material overlays said first transparent patterned conductor, second patterned conductors overlaying said polymer dispersed cholesteric material, wherein said first transparent patterned conductors and said second patterned conductors form an array; and d.) row conductors interconnected to said second patterned conductors and arranged to interconnect with contacts, wherein said contacts are also connected to said first transparent patterned conductors, and wherein said contacts are connected to the display for applying selected voltages from an external display driver to the display to change the state of the pressure-insensitive polymer-dispersed cholesteric liquid crystal material.