Capacitance gap calibration
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United States of America Patent
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Jul 10, 2007
Grant Date -
Mar 1, 2007
app pub date -
Aug 30, 2005
filing date -
Aug 30, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for calibrating a display device comprises controlling an applied voltage to at least one fabry-perot interferometer pixel through a plurality of switches. The at least one fabry-perot interferometer pixel has a top and a bottom plate defining a gap therebetween wherein the at least one fabry-perot interferometer pixel produces a selected output color in response to the applied voltage. The method further includes controlling a test voltage to the at least one fabry-perot interferometer pixel through the plurality of switches during a calibration sequence to determine a gap capacitance in the at least one fabry-perot interferometer. The gap capacitance represents the relative position of the top plate with respect to the bottom plate.
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