| 摘要 |
<p>According to the present invention, a touch screen operating device includes a touch screen including Tx channels, Rx channels intersected with the Tx channels, and sensor nodes formed at an intersecting part of the Tx channels and the Rx channels; a Tx operating circuit supplying a Tx operating pulse to the Tx channels; an Rx operating circuit including an offset charge amount compensating circuit, compensating an offset charge amount included in voltages of the sensor nodes supplied through the Rx channels, with a predetermined value, and a sampling circuit, sampling the voltages of the sensor nodes having the offset charge amount compensated in response to an Rx sampling clock, and converting the sampled voltages into digital data; and a touch controller outputting touch data including coordinate information of a touch position by analyzing the digital data inputted from the Rx operating circuit with a predetermined touch recognition algorithm.</p> |
