A touchscreen device may include a driving circuit unit simultaneously applying predetermined driving signals to N first electrodes among a plurality of first electrodes, N being a natural number equal to or greater than two, a sensing circuit unit detecting levels of capacitance from a plurality of second electrodes to output sensing signals, and an operation unit determining an occurrence of a touch interaction, based on the sensing signals. The driving circuit unit determines at least one column in which a sum of elements is equal to a peak value, selects one row having a highest number of elements having a maximum level from rows of the at least one column, creates a first matrix by inverting levels of elements in the selected row, and generates the driving signals according to a driving matrix created based on the first matrix.