Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-02-08
2005-02-08
Kim, Robert H. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S175000, C349S092000, C349S035000, C349S156000, C235S380000, C235S375000, C235S376000, C235S487000, C235S492000
Reexamination Certificate
active
06853412
ABSTRACT:
A transaction card having machine readable information and a visible display comprising: a card body; machine readable information on the card body; and a flexible display affixed to the card body for displaying information related to the machine readable information, the display including a 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, and an array of conductors connected to the display for applying selected voltages from an external display driver to the display to change the state of the display.
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Blank Lynne M.
Kim Robert H.
Konkol Chris P.
Wang George Y.
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