IMAGE-DISPLAY-DEVICE DRIVE METHOD, IMAGE DISPLAY DEVICE, AND IMAGE DISPLAY SYSTEM
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United States of America Patent
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Issued Date -
Mar 6, 2014
app pub date -
Aug 6, 2012
filing date -
Dec 7, 2011
priority date (Note) -
Abandoned
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Abstract
Discharge for detecting the position coordinates of an electronic pen is caused stably, and the position coordinates are detected accurately. For this purpose, in a driving method of an image display device, an image display subfield, a y-coordinate detection subfield, and an x-coordinate detection subfield are included in one field. In the x-coordinate detection subfield, an x-coordinate detection waiting period is set in which a voltage higher than an x-coordinate detection voltage is applied to the scan electrodes and a voltage lower than the voltage of x-coordinate detection pulses is applied to the data electrodes. After the x-coordinate detection waiting period, the x-coordinate detection voltage is applied to the scan electrodes, and the x-coordinate detection pulses are sequentially applied to the data electrodes.
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