An electronic device comprising: a display ; a display driver integrated circuit, IC, DDI , configured to output a synchronization signal corresponding to an update of a screen to be displayed on the display; and a touch circuit including a touch sensor and a touch sensor IC configured to control the touch sensor to sense a touch input with respect to a position on the display , wherein the touch sensor IC is further configured to: apply a first driving signal to the touch sensor , based on a first period in which a synchronization signal corresponding to a first display update frequency is applied, when the synchronization signal is received from the DDI , and apply a second driving signal to the touch sensor during a designated active period in a second period and stop applying the second driving signal to the touch sensor during a dormant period in the second period , when a synchronization signal corresponding to a second display update frequency for the second period is received from the DDI , wherein the second display update frequency is less than the first display update frequency; and wherein, in the active period, a frequency of the second driving signal is higher than a frequency of the first driving signal. a display ; a display driver integrated circuit, IC, DDI , configured to output a synchronization signal corresponding to an update of a screen to be displayed on the display; and a touch circuit including a touch sensor and a touch sensor IC configured to control the touch sensor to sense a touch input with respect to a position on the display , wherein the touch sensor IC is further configured to: apply a first driving signal to the touch sensor , based on a first period in which a synchronization signal corresponding to a first display update frequency is applied, when the synchronization signal is received from the DDI , and apply a second driving signal to the touch sensor during a designated active period in a second period and stop applying the second driving signal to the touch sensor during a dormant period in the second period , when a synchronization signal corresponding to a second display update frequency for the second period is received from the DDI , wherein the second display update frequency is less than the first display update frequency; and wherein, in the active period, a frequency of the second driving signal is higher than a frequency of the first driving signal. apply a first driving signal to the touch sensor , based on a first period in which a synchronization signal corresponding to a first display update frequency is applied, when the synchronization signal is received from the DDI , and apply a second driving signal to the touch sensor during a designated active period in a second period and stop applying the second driving signal to the touch sensor during a dormant period in the second period , when a synchronization signal corresponding to a second display update frequency for the second period is received from the DDI , wherein the second display update frequency is less than the first display update frequency; and wherein, in the active period, a frequency of the second driving signal is higher than a frequency of the first driving signal. <EOS>