US 6,753,999 · Granted 2004-06-22
Electrophoretic displays in portable devices and systems for addressing such displays
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.
Patent details
- Publication number
- US 6,753,999
- Filing date
- 2002-05-31
- Grant date
- 2004-06-22
- Assignee
- E Ink Corporation
- Inventor(s)
- ZEHNER ROBERT W., DUTHALER GREGG M., PAOLINI, JR. RICHARD J., MORRISON IAN
- CPC class
- G09F9/372
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