Patent ID: 8358287

Claim:
A process module for use in a sensing structure of a displayer to determine at least one touch position in the displayer, the sensing structure having a plurality of sensing elements for forming a plurality of sensing areas, the process module comprising: a transformation unit, being configured to receive touch voltages from the sensing elements and transform each of the touch voltages into a digital signal; and a control unit, being electrically connected to the transformation unit and configured to select at least one selected area from the sensing areas in response to the digital signals and calculate the at least one touch position of the at least one selected area, wherein the at least one selected area is the one of the sensing areas having a peak voltage value, the peak voltage value is determining by: calculating an area voltage value of each of the sensing areas, wherein the area voltage value is an average value of each touch voltage of each sensing element in each sensing area; and selecting an adjacent sensing area with a greatest area voltage value from the sensing areas.