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Method and system for writing data to MEMS display elements

  • US 8,791,897 B2
  • Filed: 11/08/2012
  • Issued: 07/29/2014
  • Est. Priority Date: 09/27/2004
  • Status: Expired due to Fees
First Claim
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1. A method of actuating an electromechanical display element, the display element comprising a portion of an array of display elements, the method comprising:

  • writing display data to the display element with a potential difference of a first polarity during a first portion of a display write process;

    applying a first bias potential to the display element during a second portion of the display write process, the first bias potential causing a first potential difference across the display element with the first polarity; and

    transitioning the potential applied to the display element from the first bias potential to apply a second bias potential polarity to the electromechanical display element during a third portion of the display write process, the second bias potential causing a second potential difference across the display element with a second polarity opposite the first polarity,wherein a transition time between applying the first bias potential and applying the second bias potential is configured such that the display element does not change states as a result of transitioning the voltage from the first bias potential to the second bias potential; and

    wherein a transition time between the bias potentials is less than or equal to “

    τ

    iMoD+“

    τ

    RC, wherein “

    τ

    iMoD comprises a constant of the electromechanical display element determined with reference to physical characteristics of the electromechanical display element and wherein τ

    RC comprises a constant related to electrical characteristics of the electromechanical display element.

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