IN-CELL TOUCH SCREEN AND A METHOD OF DRIVING THE SAME
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United States of America Patent
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Issued Date -
Nov 17, 2016
app pub date -
Aug 14, 2015
filing date -
May 13, 2015
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention is directed to a method of driving an in-cell touch screen. In one embodiment, adjacent common voltage (VCOM) electrodes, a source line and/or a gate line is set high-impedance, such that an equivalent capacitor is not possessed by the current VCOM electrode. In another embodiment, a gate line is set high-impedance in the touch sensing mode. A voltage waveform of the current VCOM electrode is applied to adjacent VCOM electrodes abutting the current VCOM electrode and/or to a source line, such that an equivalent capacitor has no effect on the current VCOM electrode.
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