Display apparatus

1. A display apparatus comprising:

a display module configured to display an image and to be folded about a folding axis at a folding area defined on a plane;

a support member below the display module, the support member comprising a folding part overlapping the folding area and configured to be folded about the folding axis, the folding part comprising:

a plurality of joint portions extending parallel to the folding axis and connected to each other, each of the joint portions comprising a support surface supporting the display module; and

a plurality of connection members respectively connecting adjacent ones of the joint portions to each other; and

a protective member between the display module and the support member,

wherein, when the support member is folded, a cusp point is formed between adjacent ones of the support surfaces on a cross-section, and

wherein the joint portions connected to the connection members are rotated by the connection member to allow the folding part to be folded.

2. The display apparatus of claim 1 , wherein the support member further comprises a support plate connected to the folding part and overlapping a non-folding area of the display module that is adjacent to the folding area on the plane.

3. The display apparatus of claim 2 , wherein the protective member comprises:

a first portion overlapping the folding area; and

a second portion overlapping the non-folding area, and

wherein the first portion comprises a material different from that of the second portion.

4. The display apparatus of claim 3 , wherein the first portion has a strength that is less than that of the second portion.

5. The display apparatus of claim 2 , wherein the support plate has a thickness greater than that of the folding part.

6. The display apparatus of claim 1 , further comprising an adhesion member between the support member and the protective member to couple the support member to the protective member.

7. The display apparatus of claim 1 , wherein the protective member has a strength greater than that of the display module and equal to or less than that of the support member.

8. The display apparatus of claim 1 , wherein the protective member comprises metal.

9. The display apparatus of claim 1 , wherein the protective member comprises a plastic material.

10. The display apparatus of claim 1 , wherein each of the joint portions further comprises a bottom surface opposite the support surface and nearer to the folding axis than the support surface is.

11. The display apparatus of claim 10 , wherein the support surface has a surface area greater than that of the bottom surface.

12. The display apparatus of claim 11 , wherein each of the joint portions has a reverse trapezoidal cross-sectional shape.

13. The display apparatus of claim 10 , wherein each of the joint portions further comprises a plurality of side surfaces extending between the support surface and the bottom surface, and

wherein corners between the support surface and the side surfaces have a chamfered shape.

14. The display apparatus of claim 10 , wherein each of the joint portions has a rectangular cross-sectional shape.

15. The display apparatus of claim 10 , wherein the support surface comprises a curved surface.

16. The display apparatus of claim 1 , wherein the protective member has a surface area equal to that of the folding area.

17. The display apparatus of claim 1 , wherein the display module comprises:

a display member configured to display the image; and

an input detection member on the display member and configured to detect an external input, the input detection member comprising a plurality of input detection sensors.

18. A display apparatus comprising:

a display module configured to display an image and to be folded about a folding axis at a folding area defined on a plane;

a support member below the display module, the support member comprising:

a folding part overlapping the folding area and configured to be folded about the folding axis; and

a support plate connected to the folding part and overlapping a non-folding area of the display module that is adjacent to the folding area on the plane, the folding part comprising:

a plurality of joint portions extending parallel to the folding axis; and

a plurality of connection members respectively connecting adjacent ones of the joint portions to each other, at least one of the connection members connecting one of the joint portions to the support plate and at least one other one of the connection members connecting two adjacent ones of the joint portions to each other; and

a protective member between the display module and the support member,

wherein the joint portions connected to the connection members are rotated by the connection member to allow the folding part to be folded.

19. A display apparatus comprising:

a display module configured to display an image and to be folded about a folding axis at a folding area defined on a plane;

a support member below the display module, the support member comprising:

a plurality of joint portions extending parallel to the folding axis, each of the plurality of joint portions comprising a support surface supporting the display module, each of the support surfaces having a flat plate shape, each of the joint portions having a plurality of openings therein, the openings extending in a direction parallel to the folding axis; and

a plurality of connection members connected to the joint portions at the openings therein; and

a protective member between the display module and the support member,

wherein the joint portions connected to the connection members are rotated by the connection member to allow the support member to be folded.