Display device

1. A display device comprising:

an accommodating member, in which an inner space is defined;

a display panel accommodated in the inner space in the accommodating member; and

an energy generating module disposed between the accommodating member and the display panel and which produces a triboelectricity,

wherein the energy generating module comprises:

a first electrified substrate fixed to the accommodating member; and

a second electrified substrate disposed on the first electrified substrate,

wherein the second electrified substrate moves relative to the first electrified substrate by a frictional event, and

wherein the triboelectricity is produced by a relative movement between the first and second electrified substrates.

2. The display device of claim 1 , wherein

the first electrified substrate comprises:

a first base substrate;

a first conductive layer disposed on the first base substrate; and

a first electrified layer disposed on the first conductive layer, and

the second electrified substrate comprises:

a second base substrate disposed opposite to the first base substrate;

a second conductive layer disposed on the second base substrate; and

a second electrified layer disposed on the second conductive layer and electrically connected to the second conductive layer.

3. The display device of claim 1 , wherein

the first electrified substrate comprises a first frictional surface defined on a surface of the first electrified layer, which faces the second electrified layer,

the second electrified substrate comprises a second frictional surface defined on a surface of the second electrified layer, which faces the first electrified layer,

the second frictional surface comprises a material positioned in a triboelectric series different from a material of the first frictional surface, and

the first and second frictional surfaces have different polarities from each other by the frictional event.

4. The display device of claim 3 , wherein the first electrified layer and the first conductive layer are integrally formed as a single unitary and indivisible unit.

5. The display device of claim 3 , wherein the first conductive layer comprises:

a base layer comprising a conductive material and disposed on the first base substrate to cover an entire surface of the first base substrate; and

a plurality of conductive patterns disposed on the base layer, comprising a conductive material, and electrically connected to the base layer,

wherein the first electrified layer covers the base layer and the conductive patterns, and

wherein the first frictional surface overlaps the conductive patterns.

6. The display device of claim 5 , wherein the base layer comprises a same material as the conductive patterns.

7. The display device of claim 6 , wherein

the first electrified substrate further comprises an intermediate layer disposed between the first conductive layer and the first electrified layer to cover portions of the base layer, which are exposed through the conductive patterns, and

the first electrified layer covers the intermediate layer and the conductive patterns.

8. The display device of claim 7 , wherein

the first conductive layer comprises a same material as a material of the second conductive layer, and

the intermediate layer comprises a same material as a material of the second electrified layer.

9. The display device of claim 3 , wherein

the first frictional surface has a positive (+) electric charge by the frictional event, and

the second frictional surface has a negative (−) electric charge by the frictional event.

10. The display device of claim 9 , wherein

the material of the second frictional surface comprises an epoxy resin, and

the material of the first frictional surface comprises a metal material.

11. The display device of claim 10 , wherein the metal material comprises copper (Cu), nickel (Ni), or gold (Au).

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

a spacer disposed between the first and second electrified substrates and which allows the first frictional surface to be spaced apart from the second frictional surface.

13. The display device of claim 12 , wherein the spacer comprises an insulating material having an elasticity.

14. The display device of claim 1 , wherein the second electrified substrate moves substantially in a thickness direction of the second electrified substrate with respect to the first electrified substrate.

15. The display device of claim 1 , wherein the second electrified substrate and the first electrified substrate relatively move in opposite directions from each other.

16. The display device of claim 1 , wherein

the display panel comprises an organic light emitting diode,

the second electrified substrate is fixed to the display panel and integrally moves together with the display panel, and

the display panel moves in the inner space by the frictional event.

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

a light source disposed in the inner space and which provides light to the display panel; and

an optical member disposed between the display panel and the accommodating member,

wherein the second electrified substrate is fixed to the optical member and integrally moves together with the optical member, and

the optical member moves in the inner space by the frictional event.

18. The display device of claim 1 , wherein the energy generating module further comprises a rectifying circuit electrically connected to each of the first and second electrified substrates to rectify the triboelectricity.

19. The display device of claim 18 , wherein the energy generating module further comprises a chargeable module connected to the rectifying circuit and charged with the triboelectricity output from the rectifying circuit.

20. The display device of claim 18 , wherein

the energy generating module is defined by a plurality of energy generating modules, wherein each of the energy generating modules comprises the first and second electrified substrates, and

the energy generating modules are disposed to be spaced apart from each other on a plane surface.