Flexible display device with settled cover layer

1 . A display device comprising:

a display panel;

a support plate disposed below the display panel, the support plate comprising a first flat part, a second flat part, and a folding part disposed between the first and second flat parts;

a first cover layer disposed in a first folding groove defined in a bottom surface of the support plate overlapping the folding part; and

a first lower adhesive layer disposed on the bottom surface of the support plate, the first lower adhesive layer comprising a first lower primary adhesive layer and a first lower secondary adhesive layer,

wherein the folding part has a thickness different than each of the first and second flat parts, the first lower primary adhesive layer overlaps a first edge portion of the first cover layer adjacent to the first flat part, and the first lower secondary adhesive layer overlaps a second edge portion of the first cover layer adjacent to the second flat part.

2 . The display device of claim 1 ,

wherein the first and second flat parts are arranged in a first direction,

wherein a bottom surface of the folding part is disposed higher than bottom surfaces of the first and second flat parts.

3 . The display device of claim 2 , wherein the support plate comprises:

a first sub-flat part disposed between the first flat part and the folding part; and

a second sub-flat part disposed between the second flat part and the folding part,

wherein each of the first and second sub-flat parts has substantially the same thickness as the folding part, and the bottom surface of the folding part and the bottom surfaces of the first and second sub-flat parts are defined in substantially the same plane.

4 . The display device of claim 1 , further comprising a first folding adhesive layer disposed between the first cover layer and the bottom surface of the folding part and between the first cover layer and the bottom surfaces of the first and second sub-flat parts.

5 . The display device of claim 1 , wherein the first cover layer protrudes no farther downward than the bottom surfaces of the first and second flat parts.

6 . The display device of claim 1 , wherein a bottom surface of the first cover layer is directly disposed on top surfaces of the first lower primary and secondary adhesive layers.

7 . The display device of claim 3 , wherein a top surface of the folding part and top surfaces of the first and second sub-flat parts are defined in substantially the same plane, and the top surface of the folding part and the top surfaces of the first and second sub-flat parts are disposed lower than top surfaces of the first and second flat parts.

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

a second cover layer disposed on the top surface of the folding part and the top surfaces of the first and second sub-flat parts; and

second folding adhesive layers disposed between the second cover layer and the top surface of the folding part and between the second cover layer and the top surfaces of the first and second sub-flat parts,

wherein the second cover layer protrudes no farther upward than the top surfaces of the first and second flat parts.

9 . The display device of claim 8 , further comprising a first upper adhesive layer disposed on the top surfaces of the first and second flat parts,

wherein the first upper adhesive layer is disposed on the second cover layer that overlaps the first and second sub-flat parts.

10 . The display device of claim 1 ,

wherein the first and second flat parts are arranged in a first direction,

wherein a top surface of the folding part is disposed lower than top surfaces of the first and second flat parts.

11 . The display device of claim 10 , wherein the support plate comprises:

a first sub-flat part disposed between the first flat part and the folding part; and

a second sub-flat part disposed between the second flat part and the folding part,

wherein each of the first and second sub-flat parts has substantially the same thickness as the folding part, and the top surface of the folding part and the top surfaces of the first and second sub-flat parts are defined in substantially the same plane.

12 . The display device of claim 11 , further comprising a fragment part disposed on the top surface of the folding part and the top surfaces of the first and second sub-flat parts, wherein the fragment part comprises a flexible plastic material.

13 . A display device comprising:

a display panel;

a support plate disposed below the display panel and comprising a first flat part, a second flat part, and a central part disposed between the first and second flat parts;

a first cover layer disposed in a first folding groove defined in a bottom surface of the support plate overlapping the central part; and

a first lower adhesive layer disposed on the bottom surface of the support plate, the first lower adhesive layer comprising a first lower primary adhesive layer and a first lower secondary adhesive layer,

wherein the first lower primary adhesive layer overlaps a first edge portion of the first cover layer adjacent to the first flat part, and the first lower secondary adhesive layer overlaps a second edge portion of the first cover layer adjacent to the second flat part.

14 . The display device of claim 13 , wherein the central part comprises:

a folding part in which a plurality of openings are defined;

a first sub-flat part without the openings which is disposed between the folding part and the first flat part; and

a second sub-flat part without the openings which is disposed between the folding part and the second flat part.

15 . The display device of claim 13 , further comprising a first folding adhesive layer disposed between the central part and the first cover layer,

wherein the first cover layer protrudes no farther downward than the bottom surfaces of the first and second flat parts, and

wherein the first and second flat parts are arranged in a first direction.

16 . The display device of claim 15 , further comprising:

a second cover layer disposed in a second folding groove defined in a top surface of the support plate overlapping the central part; and

a second folding adhesive layer disposed between the central part and the second cover layer,

wherein the second cover layer protrudes no farther outward than the top surfaces of the first and second flat parts.

17 . An electronic apparatus comprising:

a display device; and

a power source configured to supply power to the display device,

the display device comprising:

a display panel;

a support plate disposed under the display panel, the support plate comprising a first flat part, a second flat part, and a folding segment disposed between the first and second flat parts;

a plurality of openings defined in at least the folding segment of the support plate;

at least one cover layer disposed over the openings; and

a first lower adhesive layer disposed on a bottom surface of the support plate, the first lower adhesive layer comprising a first lower primary adhesive layer and a first lower secondary adhesive layer,

wherein the at least one cover layer is settled into the support plate, and

wherein the folding segment of the support plate comprises an etched space for the at least one cover layer to settle, and the first lower primary adhesive layer overlaps a first edge portion of the at least one cover layer adjacent to the first flat part, and the first lower secondary adhesive layer overlaps a second edge portion of the same at least one cover layer adjacent to the second flat part.

18 . The electronic apparatus of claim 17 , wherein the folding segment is in-folded and out-folded at a substantially same first radius about a folding axis.

19 . The display device of claim 13 , wherein the central part is in-folded and out-folded at a substantially same first radius about a folding axis.

20 . The display device of claim 1 , wherein the folding part is in-folded and out-folded at a substantially same first radius about a folding axis.