A touch screen device (110, 160, 161) comprising: a touch pad comprising driving lines and sensing lines intersecting the driving lines; a driver configured to apply a driving signal to the driving lines; a signal output collector configured to receive a touch signal from the sensing lines; and a controller configured to control the driver and the signal output collector; characterized in that the controller is further configured to: control the driver to perform primary scanning to sequentially apply the driving signal to first driving lines disposed at predetermined intervals, among the driving lines; determine a scanning region, based on a first driving line where a touch is sensed among the first driving lines to which the driving signal is applied; and control the driver to perform secondary scanning to sequentially apply the driving signal to second driving lines included in the determined scanning region, among the driving lines; wherein the controller is further configured to: determine whether a region that is touched on the touch pad is maintained in a same position on the touch pad for a predetermined period of time or longer; perform the secondary scanning, for recognizing a fingerprint, in response to the determination that the touched region touched is maintained in the same position on the touch pad for the period of time or longer; and repeat the primary scanning, for sensing a touch, in response to the determination that the touched region touched is not maintained in the same position on the touch pad for the period of time or longer. a touch pad comprising driving lines and sensing lines intersecting the driving lines; a driver configured to apply a driving signal to the driving lines; a signal output collector configured to receive a touch signal from the sensing lines; and a controller configured to control the driver and the signal output collector; characterized in that the controller is further configured to: control the driver to perform primary scanning to sequentially apply the driving signal to first driving lines disposed at predetermined intervals, among the driving lines; determine a scanning region, based on a first driving line where a touch is sensed among the first driving lines to which the driving signal is applied; and control the driver to perform secondary scanning to sequentially apply the driving signal to second driving lines included in the determined scanning region, among the driving lines; wherein the controller is further configured to: determine whether a region that is touched on the touch pad is maintained in a same position on the touch pad for a predetermined period of time or longer; perform the secondary scanning, for recognizing a fingerprint, in response to the determination that the touched region touched is maintained in the same position on the touch pad for the period of time or longer; and repeat the primary scanning, for sensing a touch, in response to the determination that the touched region touched is not maintained in the same position on the touch pad for the period of time or longer. control the driver to perform primary scanning to sequentially apply the driving signal to first driving lines disposed at predetermined intervals, among the driving lines; determine a scanning region, based on a first driving line where a touch is sensed among the first driving lines to which the driving signal is applied; and control the driver to perform secondary scanning to sequentially apply the driving signal to second driving lines included in the determined scanning region, among the driving lines; wherein the controller is further configured to: determine whether a region that is touched on the touch pad is maintained in a same position on the touch pad for a predetermined period of time or longer; perform the secondary scanning, for recognizing a fingerprint, in response to the determination that the touched region touched is maintained in the same position on the touch pad for the period of time or longer; and repeat the primary scanning, for sensing a touch, in response to the determination that the touched region touched is not maintained in the same position on the touch pad for the period of time or longer. determine whether a region that is touched on the touch pad is maintained in a same position on the touch pad for a predetermined period of time or longer; perform the secondary scanning, for recognizing a fingerprint, in response to the determination that the touched region touched is maintained in the same position on the touch pad for the period of time or longer; and repeat the primary scanning, for sensing a touch, in response to the determination that the touched region touched is not maintained in the same position on the touch pad for the period of time or longer.