| 摘要 |
<p>PURPOSE: A device and method for controlling a touch screen installed in an inversion LCD display are provided to accurately recognize a touch coordinate by correcting an inaccurate output value of a touch coordinate value resulting from the noise interference between a display panel and a TSP(Touch Screen Panel). CONSTITUTION: A noise processing unit(400) is connected to a sensing electrode of a touch screen. In addition, the noise processing unit receives an inversion signal of an LCD device to output the voltage of the inversion signal and the voltage depending on the operation of a comparison unit as a touch output value, wherein the voltage signal of the inversion signal varies according to inverted noises. A control unit(300) reflects the touch output value to electrostatic capacitance measurement unit to control the display operation according to a touch operation of a user received from the touch screen.</p> |
