Display device and method of fabricating the same

1. A display device, comprising:

a display panel comprising a first region, in which effective pixels including an effective organic material are provided, a second region, in which ineffective pixels including an organic material that is denatured from the effective organic material of the effective pixels are provided, and a third region, in which a pixel is absent;

a protection member which comprises a thermoplastic resin, is disposed on a rear surface of the display panel and defines a first groove corresponding to the second region; and

an adhesive member between the protection member and the display panel.

2. The display device of claim 1 , wherein each of the effective pixels and the ineffective pixels comprises an organic light emitting diode and a pixel driving circuit connected to the organic light emitting diode, and

the pixel driving circuits of the effective pixels have a same structure as that of the pixel driving circuits of the ineffective pixels.

3. The display device of claim 1 , wherein the thermoplastic resin comprises polyethylene terephthalate.

4. The display device of claim 1 , wherein a portion of the rear surface of the display panel corresponding to the second region is exposed to an outside.

5. The display device of claim 1 , wherein a second groove is defined in the adhesive member corresponding to the second region.

6. The display device of claim 1 , wherein a rear surface of the protection member comprises a first rear region and a second rear region, between which the first groove is interposed, and

the protection member further comprises a bump portion disposed adjacent to the first groove,

wherein the bump portion is protruded from the first rear region and the second rear region.

7. The display device of claim 1 , wherein the protection member comprises a first inner side surface and a second inner side surface defining the first groove, and

the first inner side surface and the second inner side surface are inclined.

8. The display device of claim 1 , wherein the display panel further comprises a fourth region, in which effective pixels are provided, and the second region is located between the first region and the fourth region.

9. The display device of claim 8 , wherein the fourth region is bent from the first region.

10. The display device of claim 1 , further comprising a window unit provided on the display panel,

wherein the window unit comprises a base film facing the protection member with the display panel interposed therebetween, and a light-blocking pattern, which is disposed on a rear surface of the base film, and

the light-blocking pattern is spaced apart from the second region in a plan view.

11. The display device of claim 1 , wherein the first groove overlaps with a portion of the third region.

12. A display device, comprising:

a display panel comprising an effective pixel region, in which effective pixels including an effective organic material are provided, an ineffective pixel region, in which ineffective pixels including an organic material that is denatured from the effective organic material of the effective pixels are provided, and a peripheral region, in which a pixel is absent;

a protection member which is provided on a rear surface of the display panel and defines a groove corresponding to the ineffective pixel region; and

an adhesive member provided between the protection member and the display panel.

13. The display device of claim 12 , wherein the effective pixel region comprises a first effective pixel region and a second effective pixel region, and

the ineffective pixel region is disposed between the first effective pixel region and the second effective pixel region.

14. The display device of claim 13 , wherein the second effective pixel region is bent from the first effective pixel region.

15. The display device of claim 12 , wherein the ineffective pixel region includes a line-shaped region extending in a predetermined direction.

16. The display device of claim 12 , wherein the display panel comprises a base layer which is in contact with the protection member,

the base layer comprises a thermosetting resin, and

the protection member comprises a thermoplastic resin.

17. A method of fabricating a display device, the method comprising:

providing a preliminary display device comprising a display panel and a protection member provided on a rear surface of the display panel, the display panel comprising a pixel region, in which pixels are provided, and a peripheral region, in which the pixels are absent; and

pressing a portion of the protection member using a heating block to inactivate a predetermined number of pixels of the pixels, which are located in a region of the pixel region corresponding to the portion of the protection member.

18. The method of claim 17 , wherein the protection member comprises a thermoplastic resin, and

the heating block is heated to a temperature higher than a sublimation temperature of the thermoplastic resin.

19. The method of claim 17 , wherein the portion of the protection member is removed to define a groove, and

a bump portion is disposed on a rear surface of the protection member and adjacent to the groove, when the protection member is pressed by the heating block.

20. The method of claim 19 , further comprising removing the bump portion, after the pressing the protection member using the heating block.