Foldable display device

1. A foldable display comprising:

a display panel comprising a display area, a non-display area, and a folding area; and

a support member disposed below the display panel and comprising first stress relief portion and second stress relief portions that do not overlap with each other,

wherein the support member has a first surface facing the display panel and a second surface opposite the first surface,

the first stress relief portion is disposed at a center portion of the folding area of the first surface of the support member, and

the second stress relief portions are disposed at edges of the folding area of the second surface of the support member.

2. The foldable display of claim 1 , wherein the non-display area is disposed outside the display area, and the folding area is disposed in the display area and the non-display area.

3. The foldable display of claim 1 , wherein the display panel and the support member are in an out-folding state or an in-folding state by being folded in the folding area.

4. The folding display of claim 1 , wherein the first stress relief portion comprises a plurality of first stress relief patterns, and each of the plurality of first stress relief patterns is formed as an engraved pattern on the first surface of the support member.

5. The folding display of claim 4 , wherein the second stress relief portions comprise a plurality of second stress relief patterns, and each of the second stress relief patterns is formed as an engraved pattern on the second surface of the support member.

6. The folding display of claim 5 , wherein the first stress relief patterns and the second stress relief patterns have trapezoidal-shaped cross-sections.

7. The folding display of claim 6 , wherein the support member comprises a light blocking member.

8. The folding display of claim 3 , further comprising:

a protective film disposed on the display panel; and

a buffer member disposed below the support member.

9. The display device of claim 8 , wherein the protective film and the buffer member are in the in-folding state or in the out-folding state by being folded in the folding area.

10. A foldable display being folded into an out-folding state or an in-folding state, comprising

a display panel comprising a display area, a non-display area, and a folding area;

a protective film disposed on the display panel;

a support member disposed below the display panel and comprising first stress relief portion and second stress relief portions that do not overlap with each other, and

a buffer member disposed below the support member,

wherein the support member has a first surface facing the display panel and a second surface opposite the first surface,

the first stress relief portion is disposed on at a center portion of the folding area of the first surface of the support member, and

the second stress relief portions are disposed at edges of the folding area of the second surface of the support member.

11. The foldable display of claim 10 , wherein the display panel, the protective film, the support member, and the buffer member are in the out-folding state or the in-folding state by being folded in the folding area.

12. The foldable display of claim 10 , wherein the first stress relief portion comprises a plurality of first stress relief patterns, and each of the plurality of first stress relief patterns is formed as an engraved pattern on the first surface of the support member.

13. The foldable display of claim 12 , wherein each of the second stress relief portions comprises a plurality second stress relief patterns, and each of the second stress relief patterns is formed as an engraved pattern on the second surface of the support member.

14. The foldable display of claim 13 , wherein the first stress relief patterns and the second stress relief patterns have trapezoidal-shaped cross-sections.

15. The foldable display of claim 14 , wherein the support member comprises a light blocking material.