Display device and support film structure for display device

1. A display device comprising:

a display panel comprising:

a display area comprising a first area that is bendable; and

a non-display area adjacent to the display area;

a support film coupled to a bottom surface of the display panel, the support film comprising a first groove overlapping with the first area; and

a polymer layer disposed in the first groove, the polymer layer comprising a material with higher flexibility than the support film,

wherein angles formed by a top surface of the support film and inner sides of the support film defining the first groove are acute angles,

wherein the support film comprises polyethylene terephthalate (PET), and

wherein the polymer layer comprises polyimide (PI).

2. The display device of claim 1 , wherein the polymer layer fills the first groove and is in contact with the inner sides of the support film.

3. The display device of claim 2 , wherein the polymer layer is further in contact with a bottom surface of the support film.

4. The display device of claim 2 , further comprising:

a resin layer disposed between the display panel and the support film, the resin layer coupling the display panel and the support film,

wherein the first groove is further defined in the resin layer, and

wherein the polymer layer is further in contact with inner sides of the resin layer defining the first groove.

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

a carbide disposed between the bottom surface of the display panel and the polymer layer.

6. The display device of claim 5 , wherein the carbide is in contact with the bottom surface of the display panel and the polymer layer.

7. The display device of claim 1 , wherein:

the non-display area comprises a second area that is bendable;

the support film further comprises a second groove overlapping with the second area and extending in a same direction as the first groove; and

the display device further comprises a carbide disposed on a portion of the bottom surface of the display panel exposed by the second groove.

8. The display device of claim 1 , wherein:

the non-display area comprises a second area that is bendable;

the support film further comprises a second groove overlapping with the second area and extending in a same direction as the first groove; and

the display device further comprises protruding patterns disposed near the second groove and protruded from a bottom surface of the support film.

9. The display device of claim 1 , wherein:

the non-display area comprises a second area that is bendable;

the support film further comprises a second groove overlapping with the second area and extending in a same direction as the first groove; and

the display device further comprises a neutral plane adjustment layer overlapping with the second area and comprising an organic material.

10. A display device comprising:

a display panel comprising:

a display area comprising a first area that is bendable; and

a non-display area adjacent to the display area;

a support film coupled to a bottom surface of the display panel, the support film comprising a first groove overlapping with the first area; and

a polymer layer disposed in the first groove, the polymer layer comprising a material with higher flexibility than the support film,

wherein angles formed by a top surface of the support film and inner sides of the support film defining the first groove are acute angles,

wherein a portion of the bottom surface of the display panel is exposed by the first groove, and

wherein, in the first groove, the polymer layer is in contact with the portion of the bottom surface of the display panel.

11. The display device of claim 10 , wherein:

the display panel comprises:

a base substrate having flexibility, the base substrate comprising a bottom surface providing the bottom surface of the display panel,

a driving layer disposed on the base substrate,

an organic light-emitting element disposed on the driving layer, and

a thin-film encapsulation layer covering the organic light-emitting element,

wherein, in the first groove, the polymer layer is in contact with a portion of the bottom surface of the base substrate.

12. A display device comprising:

a display panel comprising:

a display area comprising a first area that is bendable; and

a non-display area adjacent to the display area;

a support film coupled to a bottom surface of the display panel, the support film comprising a first groove overlapping with the first area; and

a polymer layer disposed in the first groove, the polymer layer comprising a material with higher flexibility than the support film,

wherein angles formed by a top surface of the support film and inner sides of the support film defining the first groove are acute angles, and

wherein the polymer layer is formed as an adhesive tape.

13. A display device comprising:

a display panel comprising:

a display area comprising a first area that is bendable; and

a non-display area adjacent to the display area;

a support film coupled to a bottom surface of the display panel, the support film comprising a first groove overlapping with the first area;

a polymer layer disposed in the first groove, the polymer layer comprising a material with higher flexibility than the support film; and

protruding patterns disposed near the first groove and protruded from a bottom surface of the support film,

wherein angles formed by a top surface of the support film and inner sides of the support film defining the first groove are acute angles, and

wherein the protruding patterns are in contact with the polymer layer.

14. The display device of claim 13 , wherein the protruding patterns and the polymer layer extend in the same direction.

15. The display device of claim 13 , wherein the protruding patterns are burr patterns.