Display device and method of driving the same

1. A display device comprising:

a display panel comprising non-folding areas arranged along a first direction and a folding area between the non-folding areas;

a first electrode on the display panel and extending in the first direction; and

a second electrode on the display panel, insulated from the first electrode, and extending in a second direction crossing the first direction,

wherein openings overlapping the folding area are in the first electrode, and

wherein the openings are arranged along a third direction substantially perpendicular to a plane defined by the first and second directions, and the third direction is defined as a thickness direction with respect to the first electrode.

2. The display device of claim 1 , wherein the openings extend in the second direction, the openings being arranged along the first direction and the second direction.

3. The display device of claim 1 , wherein the openings comprise:

first horizontal openings arranged along the second direction; and

second horizontal openings arranged along the second direction, the second horizontal openings being spaced from the first horizontal openings in the first direction.

4. The display device of claim 3 , wherein the first horizontal openings partially overlap the second horizontal openings in the first direction.

5. The display device of claim 3 , wherein the first horizontal openings are alternately arranged with the second horizontal openings.

6. The display device of claim 1 , wherein the openings extend in the third direction, the openings being arranged along the first direction and the third direction.

7. The display device of claim 6 , wherein the openings comprise:

first vertical openings arranged along the third direction; and

second vertical openings arranged along the third direction, the second vertical openings being spaced from the first vertical openings in the first direction.

8. The display device of claim 7 , wherein the first vertical openings partially overlap the second vertical openings in the first direction.

9. The display device of claim 7 , wherein the first vertical openings are alternately arranged with the second vertical openings.

10. The display device of claim 1 , further comprising a driver configured to provide a first driving voltage to the first electrode,

wherein the first electrode comprises a plurality of first electrodes,

wherein the second electrode comprises a plurality of second electrodes, and

wherein the driver is configured to apply a second driving voltage having a voltage level higher than a voltage level of the first driving voltage to a touched first electrode from among the first electrodes when the folding area is touched.

11. The display device of claim 1 , further comprising:

a base substrate on the display panel; and

an adhesive layer under the base substrate,

wherein the first and second electrodes are under the base substrate, the first and second electrodes being attached to the display panel by the adhesive layer.

12. The display device of claim 1 , wherein the first electrode comprises:

a first portion having the openings, the first portion overlapping the folding area in a plan view; and

a plurality of second portions overlapping the non-folding areas in a plan view, and

wherein the folding area and the first portion are configured to be folded about a folding axis substantially parallel to the second direction.

13. The display device of claim 12 , wherein a width of the first portion in the second direction is less than a width of each of the second portions in the second direction.

14. The display device of claim 1 , wherein the first electrode comprises:

a first main electrode extending in the first direction; and

a plurality of first sub-electrodes extending in the first direction, a width of each of the first sub-electrodes in the second direction being less than a width of the first main electrode in the second direction,

wherein the first main electrode is between the first sub-electrodes, and

wherein the openings are in the first main electrode and the first sub-electrodes.

15. The display device of claim 1 , wherein the second electrode comprises:

a second main electrode extending in the second direction; and

a plurality of second sub-electrodes extending in the second direction, a width of each of the second sub-electrodes being less in the first direction than a width of the second main electrode in the first direction, and

wherein the second main electrode is between the second sub-electrodes.

16. A method of driving a display device, comprising:

touching an input sensing part on a display panel comprising a folding area, the input sensing part comprising:

a plurality of first electrodes having openings overlapping the folding area, the first electrodes being configured to receive a first driving voltage; and

a plurality of second electrodes insulated from the first electrodes, the second electrodes crossing the first electrodes;

sensing a position of the touch;

applying a second driving voltage having a voltage level higher than the first driving voltage to a first electrode that is touched from among the first electrodes when the touch position is within the folding area; and

sensing the touch on the folding area.

17. The method of claim 16 , wherein the first electrodes extend in a first direction,

wherein the second electrodes extend in a second direction crossing the first direction,

wherein the folding area is configured to be folded about a folding axis substantially parallel to the second direction, and

wherein the openings extend in the second direction and are arranged along the first direction and the second direction.

18. The method of claim 17 , wherein the openings comprise:

first horizontal openings arranged along the second direction; and

second horizontal openings arranged along the second direction, the second horizontal openings being spaced from the first horizontal openings in the first direction, and

wherein the first horizontal openings are alternately arranged with the second horizontal openings.

19. The method of claim 17 , wherein the openings further extend in a third direction substantially perpendicular to a plane defined by the first and second directions, the openings being arranged along the first direction and the third direction, the openings comprising:

first vertical openings arranged along the third direction; and

second vertical openings arranged along the third direction, the second vertical openings being spaced from the first vertical openings in the first direction, and

wherein the first vertical openings are alternately arranged with the second vertical openings.