Display device and method of manufacturing the same

1. A display device comprising:

a lower substrate having a display area and a pad area;

a display structure disposed in the display area of the lower substrate;

an upper substrate disposed on the display structure in the display area, and facing the lower substrate;

pad electrodes disposed in the pad area of the lower substrate and spaced apart from each other in a first direction parallel to a top surface of the lower substrate;

a conductive film member including conductive balls disposed on the pad electrodes, the conductive film member having a first area overlapping the pad electrodes and a second area not overlapping the pad electrodes; and

a film package disposed on the conductive film member and including bump electrodes overlapping the first area of the conductive film member,

wherein:

the shape of the conductive balls disposed in the first area is different from those disposed in the second area;

the conductive balls are arranged in the first direction and a second direction orthogonal to the first direction; and

each of the conductive balls do not overlap one another in a third direction perpendicular to the first and second directions.

2. The display device of claim 1 , wherein adjacent conductive balls are spaced apart from each other at equidistant intervals.

3. The display device of claim 2 , wherein:

the conductive balls include:

first conductive balls disposed in the first area; and

second conductive balls disposed in the second area; and

a diameter of each of the first conductive balls in the third direction perpendicular to the first and second directions is less than a diameter of each of the second conductive balls in the third direction.

4. The display device of claim 3 , wherein a portion of each of the first conductive balls directly contacts at least one of the pad electrode and the bump electrode.

5. The display device of claim 1 , wherein the conductive film member further includes a film layer partially covering the conductive balls.

6. The display device of claim 5 , wherein a thickness of the film layer disposed in the first area is different from a thickness of the film layer disposed in the second area.

7. The display device of claim 5 , wherein:

the film layer disposed in the first area has a first thickness and exposes at least a portion of each of the conductive balls disposed in the first area; and

the film layer disposed in the second area has a second thickness greater than the first thickness and covers the conductive balls disposed in the second area.

8. The display device of claim 1 , wherein the film package further includes a base substrate disposed on the bump electrodes.

9. The display device of claim 8 , wherein:

the conductive film member electrically connects the film package and the pad electrodes disposed in the first area; and

a top surface of the conductive film member disposed in the second area is spaced apart from a bottom surface of the base substrate.

10. The display device of claim 1 , further comprising an adhesive member disposed between the conductive film member and the film package disposed in the second area.

11. The display device of claim 1 , further comprising an insulating layer disposed between the pad electrodes in the pad area of the lower substrate,

wherein a height of the insulating layer in the third direction is substantially the same as that of the pad electrodes.