A display device comprising: a touch panel including a first touch electrode group in which a number s of receiving electrodes (RX_L1 to RX_Ls) and a number k of driving electrodes (TX1 to TXk) are formed to intersect each other and a second touch electrode group in which a number s of other receiving electrodes (RX_R1 to RX_Rs) and (k+1)th to th driving electrodes (TXk+1 to TX2k) are formed to intersect each other, k being less than s, the touch panel provided in an in-cell type, the receiving electrodes (RX_L1 to RX_Ls) in the first touch electrode group electrically disconnected from said other receiving electrodes (RX_R1 to RX_Rs) in the second touch electrode group; and a touch sensing unit configured to respectively supply a first driving voltage and a second driving voltage to an nth driving electrode and an (n+1)th driving electrode in each of the first and second touch electrode groups (TG1 and TG2) to determine whether the nth driving electrode is touched, n being a natural number less than k, wherein the touch sensing unit is further configured to respectively supply the first driving voltage and the second driving voltage to a kth driving electrode (TXk) configuring the first touch electrode group and a (k+1)th driving electrode (TXk+1) configuring the second touch electrode group during at least one touch sensing period subsequent to a kth touch sensing period among a plurality of touch sensing periods included in one frame period to determine whether the kth driving electrode (TXk) is touched, wherein at least one touch sensing period subsequent to the kth touch sensing period and touch sensing periods for the number k of driving electrodes (TX1 to TXk) are included in one frame period. a touch panel including a first touch electrode group in which a number s of receiving electrodes (RX_L1 to RX_Ls) and a number k of driving electrodes (TX1 to TXk) are formed to intersect each other and a second touch electrode group in which a number s of other receiving electrodes (RX_R1 to RX_Rs) and (k+1)th to th driving electrodes (TXk+1 to TX2k) are formed to intersect each other, k being less than s, the touch panel provided in an in-cell type, the receiving electrodes (RX_L1 to RX_Ls) in the first touch electrode group electrically disconnected from said other receiving electrodes (RX_R1 to RX_Rs) in the second touch electrode group; and a touch sensing unit configured to respectively supply a first driving voltage and a second driving voltage to an nth driving electrode and an (n+1)th driving electrode in each of the first and second touch electrode groups (TG1 and TG2) to determine whether the nth driving electrode is touched, n being a natural number less than k, wherein the touch sensing unit is further configured to respectively supply the first driving voltage and the second driving voltage to a kth driving electrode (TXk) configuring the first touch electrode group and a (k+1)th driving electrode (TXk+1) configuring the second touch electrode group during at least one touch sensing period subsequent to a kth touch sensing period among a plurality of touch sensing periods included in one frame period to determine whether the kth driving electrode (TXk) is touched, wherein at least one touch sensing period subsequent to the kth touch sensing period and touch sensing periods for the number k of driving electrodes (TX1 to TXk) are included in one frame period.