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Method of operation for reducing power, increasing life and improving performance of EPIDs

  • US 5,499,038 A
  • Filed: 01/11/1994
  • Issued: 03/12/1996
  • Est. Priority Date: 11/21/1991
  • Status: Expired due to Term
First Claim
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1. A method of holding an image in a hold mode on an electrophoretic display panel having at least one anode electrode and a plurality of cathode and grid electrodes after the image was written by applying a first positive voltage to said at least one anode electrode, the method comprising the steps of:

  • applying a second positive voltage to the anode electrode;

    applying a third positive voltage to a cathode electrode; and

    applying a negative voltage to a grid electrode;

    wherein said first positive voltage is at least 50 times greater than said second positive voltage.

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