Method and system for measuring position on surface capacitance touch panel using a flying capacitor
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United States of America Patent
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Apr 30, 2013
Grant Date -
Sep 20, 2012
app pub date -
Jun 4, 2012
filing date -
Nov 20, 2008
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Abstract
A touch panel having a substantially even coating of a conductive material on a non-conductive substrate and then covering the conductive material with a dielectric material, wherein a novel current measuring circuit reduces the effect of stray capacitance on the accuracy of a current measurement so that the relative X and Y position of an object on the touch panel can be determined using simple ratio equations.
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