METHOD FOR DETECTING TOUCH POINTS ON A CAPACITIVE TOUCH PANEL
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United States of America Patent
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Issued Date -
Jul 23, 2015
app pub date -
Jan 21, 2015
filing date -
Jan 23, 2014
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Abandoned
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Abstract
A method for determining touch point coordinates on capacitive type touch panel includes following steps. A touch panel with single conductive layer with a number of first electrodes and a number of second electrodes is provided, wherein each of first electrodes and second electrodes includes a number of regions with different resistance respectively. A first signal value A1T by inputting driving electrical signals to each first electrode for 1T, wherein T is single charging cycle time of a driving and sensing unit. A second signal value B1T is obtained by inputting driving electrical signals to each second electrode for 1T. A third signal value is A2T obtained by inputting driving electrical signals to each first electrode again for 3T; and a fourth signal value B2T is obtained by inputting driving electrical signals to each second electrode again for 3T.
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