Display device

1. A display device, comprising:

a display panel including a first opening disposed in a display area;

a window disposed on the display panel and including a second opening communicating with the first opening; and

a light passing member at least partially within the first and second openings,

wherein the light passing member includes:

a first light passing part at least partially within the first opening; and

a second light passing part at least partially within the first opening and having a width larger than a width of the first light passing part,

wherein the light passing member further includes a light blocking member covering all side surfaces and all bottom surfaces of the first and second light passing parts,

wherein the second light passing part has a completely cylindrical shape, and wherein the first light passing part has a first light passing sub-part that has a completely cylindrical shape, and

wherein the first light passing part has a second light passing sub-part provided between the first light passing sub-part and the second light passing part, in which the second light passing sub-part has a fluted shape that increases in diameter as a distance from the first light passing sub-part increases.

2. The display device of claim 1 , wherein a thickness of the light passing member is larger than or substantially equal to a sum of a thickness of the window and a thickness of the display panel.

3. The display device of claim 2 , wherein the thickness of the light passing member is about 500 μm to about 600 μm.

4. The display device of claim 2 , wherein the thickness of the window is about 40 μm to about 60 μm.

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

an adhesive layer disposed between the display panel and the window,

wherein the light passing member is insertable into the adhesive layer.

6. The display device of claim 5 , wherein the adhesive layer contacts at least a portion of the second light passing part.

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

a first buffer member disposed between a first side of the second light passing part and the window; and

a second buffer member disposed between a second side of the second light passing part and the window, the first side is opposite to the second side.

8. The display device of claim 7 , wherein the buffer member includes a resin.

9. The display device of claim 1 , wherein the light passing member includes a glass.

10. The display device of claim 1 , wherein a width of the second opening is larger than a width of the first opening.

11. The display device of claim 1 , wherein the display panel and the window are, independently, foldable.

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

a protective film disposed under the display panel and supporting the display panel; and

a support member disposed under the protective film and including an opening for folding the display panel and the window.

13. The display device of claim 1 , wherein a shape of at least one of the first light passing part and the second light passing part is a generally cylindrical shape.

14. The display device of claim 1 , wherein the light passing member further includes a third light passing part disposed between the first light passing part and the second light passing part,

wherein a width of the third light passing part is larger than the width of the first light passing part and is smaller than the width of the second light passing part.

15. The display device of claim 7 , buffer member includes a self-healing material that is recoverable from scratches applied thereto.

16. The display device of claim 1 , further comprising a functional module disposed under the light passing member.

17. The display device of claim 16 , wherein the functional module comprises a camera module.