Methods for addressing electrophoretic displays

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6531997
SERIAL NO

09561424

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Novel addressing schemes for controlling bistable electronically addressable displays include the use of addressing signals with additional signals having opposite polarity and equal integrated signal strength, and addressing schemes that minimize the number of state changes that a display element undergoes. In one embodiment, pre-pulses are employed to apply a pre-stress to an display element that is equal and opposite to the electrical stress applied in addressing the element. In another embodiment, the addressing signal is followed by a post-stressing pulse. Methods for minimizing the number of display elements that must change state to change the image displayed include the determination of a set of elements that must be deactivated and a set of elements that must be activated to change the image depicted by a display. Alternatively, only the elements forming one image are deactivated before the elements forming a different image are activated.

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Patent Owner(s)

Patent OwnerAddress
E INK CORPORATION1000 TECHNOLOGY PARK DRIVE ATTN IP DEPARTMENT BILLERICA MA 01821-4165

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Albert, Jonathan D Cambridge, MA 120 18724
Comiskey, Barrett Cambridge, MA 82 21839
Drzaic, Paul S Lexington, MA 165 10901
Gates, Holly G Somerville, MA 44 7982
Kazlas, Peter T Sudbury, MA 78 7600

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