Electrophoretic displays in portable devices and systems for addressing such displays
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United States of America Patent
Stats
-
Jun 22, 2004
Grant Date -
Jan 16, 2003
app pub date -
May 31, 2002
filing date -
Mar 18, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A card may include a photoconductive layer and an electrophoretic layer. The impedance of the photoconductive layer is lowered when struck by light from the light-emitting layer. Where the impedance of the photoconductive layer is lowered, the electrophoretic layer may be addressed by an applied electric field to update an image on the card. The image on a card may be updated by a system of updating an image on a card and a method of updating an image on a card that are presented.
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Family
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