Display device and method of driving the same

A display device comprising:

• a touch panel including a first touch electrode group in which s number of receiving electrodes and k number of driving electrodes are formed to intersect each other and a second touch electrode group in which s number of other receiving electrodes and (k+1)th to (2k)th driving electrodes are formed to intersect each other, k being less than s, the touch panel provided in an in-cell type, the receiving electrodes in the first touch electrode group electrically disconnected from said other receiving electrodes in the second touch electrode group;
• and
• a touch sensing unit configured to (i) supply a first driving voltage to an nth driving electrode of the first touch electrode group and (ii) supply a second driving voltage different from the first driving voltage to an (n+1)th driving electrode of the first touch electrode group while the first driving voltage is supplied to the nth driving electrode of the first touch electrode group to determine whether the nth driving electrode of the first touch electrode group is touched, n being a natural number less than k, the touch sensing unit further configured to (i) supply the first driving voltage to a kth driving electrode of the first touch electrode group and (ii) supply the second driving voltage to a (k+1)th driving electrode of the second touch electrode group while the first driving voltage is supplied to the kth driving electrode of the first touch electrode group to determine whether the kth driving electrode of the first touch electrode group is touched.

A method of driving a display device, the method comprising:

• supplying a first driving voltage to an nth driving electrode and supplying a second driving voltage different from the first driving voltage to an (n+1)th driving electrode while the first driving voltage is supplied to the nth driving electrode, the nth driving electrode and the (n+1) driving electrode being adjacent to each other in each of a first touch electrode group and a second touch electrode group, the first touch electrode group having s number of receiving electrodes and k number of driving electrodes to intersect each other which are formed in a touch panel, k being less than s and n being a natural number less than k, and the second touch electrode group having s number of other receiving electrodes and (k+1)th to (2k)th driving electrodes to intersect each other in the touch panel, the receiving electrodes in the first touch electrode group electrically disconnected from said other receiving electrodes in the second touch electrode group;
• and
• supplying the first driving voltage to a kth driving electrode of the first touch electrode group and supplying the second driving voltage to a (k+1)th driving electrode of the second touch electrode group while the first driving voltage is supplied to the kth driving electrode of the first touch electrode group to determine whether the kth driving electrode of the first touch electrode group is touched.

A display device comprising:

• a touch panel including receiving electrodes and driving electrodes including at least a first driving electrode, a second driving electrode, and a third driving electrode, the receiving electrodes intersecting the first, second, and third driving electrodes;
• and
• a touch sensing unit configured to:
• (i) supply a first driving voltage to the first driving electrode and (ii) supply a second driving voltage different from the first driving voltage to the second driving electrode while the first driving voltage is supplied to the first driving voltage to determine whether the first driving electrode is touched, the second driving electrode being adjacent to the first driving electrode,
• (i) supply the first driving voltage to the second driving electrode and (ii) supply the second driving voltage to the third driving electrode while the first driving voltage is supplied to the second driving electrode to determine whether the second driving electrode is touched, the third driving electrode being adjacent to the second driving electrode, and
• (i) supply the first driving voltage to the third driving electrode and (ii) supply the second driving voltage to the second driving electrode while the first driving voltage is supplied to the third driving electrode to determine whether the third driving electrode is touched.