Electro-optic display overlays and systems for addressing such displays
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United States of America Patent
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Mar 9, 2004
Grant Date -
Apr 24, 2003
app pub date -
Aug 30, 2002
filing date -
Mar 18, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display overlay includes a contrast media layer and a photoconductive layer disposed between two electrodes. Light from an emissive display strikes the photoconductive layer and lowers the impedance of the photoconductive layer at the point at which the light is incident. Voltage applied to the electrodes creates an electric field that addresses the contrast media layer in locations of reduced impedance.
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