PROJECTED CAPACITIVE TOUCH PANEL AND COORDINATE DETECTING METHOD THEREOF
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United States of America Patent
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Issued Date -
Jun 27, 2013
app pub date -
Dec 18, 2012
filing date -
Dec 21, 2011
priority date (Note) -
Abandoned
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Abstract
A projected capacitive touch panel includes a touch sensor unit in which X electrodes and Y electrodes are arranged to intersect each other and a controller. The controller has: X electrode and Y electrode storage units which respectively store capacitance variations of the X electrodes and the Y electrodes detected by scanning the X electrodes and the Y electrodes N times; X electrode and Y electrode capacitance variation adding units which respectively add the capacitance variations of the X electrodes and the Y electrodes; and a center coordinates calculating unit which calculates center coordinates of a position where a conductor touches the touch sensor unit by using the added capacitance variations.
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