Mobile terminal

1. A mobile terminal comprising:

a housing having a front side, a rear side and lateral sides;

a cover window disposed on the front side of the housing and defining a display area and a bezel area, wherein the bezel area includes printed color under an edge of the cover window;

an OLED display unit disposed between the cover window and the front side of the housing; and

a sensing unit disposed under the OLED display unit,

wherein the OLED display unit comprises:

a substrate having a hole below the display area of the cover window;

a transistor layer including thin film transistors and being disposed on the substrate and having a hole corresponding to the hole of the substrate;

an organic light emitting layer disposed on the transistor layer and having a hole corresponding to the hole of the transistor layer; and

an encapsulation layer disposed on the organic light emitting layer and having a hole corresponding to the hole of the organic light emitting layer, and

wherein the sensing unit senses a light transmitted through the holes.

2. The mobile terminal of claim 1 , wherein the OLED display unit further comprises:

a polarizing plate disposed on the encapsulation layer and having a hole corresponding to the hole of the encapsulation layer.

3. The mobile terminal of claim 1 , wherein the organic light emitting layer includes a plurality of spontaneous light emitting elements disposed below the display area to respectively emit preset colors.

4. The mobile terminal of claim 3 , wherein the OLED display unit comprises:

a polarizing plate disposed on the encapsulation layer and having a hole corresponding to the hole of the encapsulation layer;

a light adhesive film adhering the polarizing plate to the cover window and having a hole corresponding to the hole of the polarizing plate; and

a protection film supporting the substrate,

wherein the encapsulation layer is provided between the polarizing plate and the organic light emitting layer, and

wherein the transistor layer controls currents flowing to the spontaneous light emitting elements.

5. The mobile terminal of claim 3 , wherein the spontaneous light emitting elements are provided in the organic light emitting layer, spaced a preset distance apart from the hole of the organic light emitting layer by a margin area surrounding the hole of the organic light emitting layer, and

wherein the margin area is located between the hole of the organic light emitting layer and the spontaneous light emitting elements.

6. The mobile terminal of claim 5 , wherein the spontaneous light emitting elements comprise:

a plurality of first elements have a first size; and

a plurality of second elements have a second size different from the first size, and

wherein some of the first elements and some of the second elements are disposed outside the margin area along a shape of the hole.

7. The mobile terminal of claim 5 , wherein a width of the margin area is substantially the same in all directions.

8. The mobile terminal of claim 5 , wherein the encapsulation layer is provided in the margin area and seals off the spontaneous light emitting elements from moisture or oxygen inside the holes.

9. The mobile terminal of claim 5 , wherein the organic light emitting layer comprises a bank provided between the spontaneous light emitting elements and forming a non-light- emitting area, and

wherein the bank is spaced a preset distance apart from the hole of the organic light emitting layer by the margin area.

10. The mobile terminal of claim 5 , wherein the encapsulation layer is provided in the margin area.

11. The mobile terminal of claim 1 , wherein the transistor layer comprises a corresponding current wire providing a first signal for driving a corresponding thin film transistor, and

wherein the current wire is provided in a first direction and includes a curve detouring around the hole of the transistor layer.

12. The mobile terminal of claim 11 , wherein the transistor layer comprises a corresponding data wire providing a second signal for realizing a picture or an image via the cover window by a flow of currents to the spontaneous light emitting elements connected to a corresponding thin film transistor when the corresponding thin film transistor is driven, and

wherein the data wire is provided in a second direction including a curve detouring around the hole of the transistor layer.

13. The mobile terminal of claim 4 , wherein the bezel area is printed along an edge area of the light adhesive film.

14. The mobile terminal of claim 1 , further comprising:

an electrochromic element provided under the cover window.

15. The mobile terminal of claim 1 , further comprising:

a polymer dispersed liquid crystal provided in the cover window.

16. The mobile terminal of claim 1 , further comprising:

a piezoelectric film provided under the sensing unit and configured to flow currents therethrough when a preset pressure is applied to the sensing unit via the cover window.

17. The mobile terminal of claim 1 , wherein the encapsulation layer includes a tapered edge part on an edge area of the substrate, and

wherein the tapered edge part has an inclined surface that is lowered toward an outermost edge of the substrate.

18. The mobile terminal of claim 1 , wherein the sensing unit includes a camera.

19. A mobile terminal comprising:

a housing having a front side, a rear side and lateral sides;

a cover window disposed on the front side of the housing and defining a display area and a bezel area, wherein the bezel area includes printed color under an edge of the cover window;

an OLED display unit disposed between the cover window and the front side of the housing; and

a sensing unit disposed under the OLED display unit,

wherein an organic light emitting layer of the OLED display unit comprises:

a first hole disposed below the display area of the cover window;

at least one of first spontaneous light emitting elements disposed below the display area of the cover window and having a first size; and

at least one of second spontaneous light emitting elements disposed below the display area of the cover window and having a second size different from the first size, and

wherein the sensing unit senses a light transmitted through the first hole.

20. The mobile terminal of claim 19 , wherein the OLED display unit further comprises:

a substrate having a second hole corresponding to the first hole;

a transistor layer including thin film transistors and being disposed on the substrate and having a third hole corresponding to the second hole; and

an encapsulation layer disposed on the organic light emitting layer and having a fourth hole corresponding to the first hole, and

wherein the organic light emitting layer is disposed on the transistor layer.

21. The mobile terminal of claim 20 , wherein the OLED display unit further comprises:

a polarizing plate disposed on the encapsulation layer and having a fifth hole corresponding to the fourth hole.

22. The mobile terminal of claim 21 , wherein the OLED display unit further comprises:

a light adhesive film adhering the polarizing plate to the cover window and having a sixth hole corresponding to the fifth hole of the polarizing plate; and

a protection film supporting the substrate.

23. The mobile terminal of claim 19 , wherein the first and second spontaneous light emitting elements are spaced a preset distance apart from the first hole by a margin area surrounding the first hole,

wherein the margin area is located between the first and second spontaneous light emitting elements, and the first hole, and

wherein some of the first spontaneous light emitting elements and some of the second spontaneous light emitting elements are disposed outside the margin area along a shape of the first hole.

24. The mobile terminal of claim 23 , wherein the organic light emitting layer comprises a bank provided between the spontaneous light emitting elements, and

wherein the bank is spaced a preset distance apart from the first hole by the margin area.

25. The mobile terminal of claim 20 , wherein the transistor layer comprises a corresponding current wire providing a first signal for driving a corresponding thin film transistor, and

wherein the current wire is provided in a first direction and includes a curve detouring around the third hole of the transistor layer.

26. The mobile terminal of claim 25 , wherein the transistor layer comprises a corresponding data wire providing a second signal for realizing a picture or an image via the cover window by a flow of currents to the first and second spontaneous light emitting elements connected to a corresponding thin film transistor when the corresponding thin film transistor is driven, and

wherein the data wire is provided in a second direction including a curve detouring around the third hole of the transistor layer.

27. The mobile terminal of claim 20 , wherein the encapsulation layer includes a tapered edge part on an edge area of the substrate, and

wherein the tapered edge part has an inclined surface that is lowered toward an outermost edge of the substrate.

28. The mobile terminal of claim 19 , wherein the sensing unit includes a camera.