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Apparatus and system for writing data to electromechanical display elements

  • US 8,514,169 B2
  • Filed: 10/13/2009
  • Issued: 08/20/2013
  • Est. Priority Date: 09/27/2004
  • Status: Expired due to Fees
First Claim
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1. An apparatus for displaying images, comprising:

  • an electromechanical display element comprising at least a portion of an array of electromechanical display elements;

    a column driver configured to assert a voltage on one or more columns of the array; and

    a row driver configured to pulse one or more rows of the array with a voltage,wherein the column driver and row driver are configured to apply a plurality of potential differences across the electromechanical display element during a display write process, the column driver and row driver being configured to write display data to the electromechanical display element with a first potential difference of a first polarity during a first portion of the display write process, re-write the display data to the electromechanical display element with a second potential difference having a polarity opposite the first polarity during a second portion of the display write process, apply a third potential difference having the first polarity to the electromechanical display element during a third portion of the display write process, and apply a fourth potential difference having the opposite polarity to the electromechanical display element during a fourth portion of the display write process,wherein a state of the electromechanical display element does not change during or between the third and fourth portions of the display write process,wherein a transition time between applying the third and fourth potential differences is less than or equal to τ

    iMoD

    RC, wherein τ

    iMoD includes a constant of said electromechanical display element determined with reference to physical characteristics of said electromechanical display element, and wherein τ

    RC includes a constant related to electrical characteristics of said electromechanical display element.

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