A touch sensing system includes: a touch sensor including a plurality of sensing electrodes; and a first comparator including a first input end, a second input end and an output end, the first comparator amplifying a difference between the first input end and the second input end. The first input end is electrically connected to at least two sensing electrodes of the plurality of sensing electrodes which are adjacent to each other, and the second input end is electrically connected to at least two sensing electrodes of the plurality of sensing electrodes which are not adjacent each other and adjacent to the at least two sensing electrodes connected to the first input end, respectively.