METHOD FOR DETECTING A TOUCH POINT ON A TOUCH SENSING DEVICE AND DEVICE THEREOF
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United States of America Patent
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Issued Date -
Aug 2, 2012
app pub date -
Oct 14, 2011
filing date -
Feb 1, 2011
priority date (Note) -
Abandoned
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Abstract
A touch sensing device includes four driving electrodes, four sensing circuits, a controller and a substrate. Each sensing circuit is coupled to one of the four driving electrodes, for sensing electrical charges of the corresponding sensing electrode. The four driving electrodes, disposed on the substrate, are electrically independent to each other. Each sensing circuit detects the electrical charges of the corresponding driving electrode, and generates a count according to the electrical charges of the corresponding driving electrode. The controller calculates a position of a touch point on the touch sensing device according to counts generated by the four sensing circuits.
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