Display device and method of manufacturing display device

1. A method of manufacturing a display device, comprising in order:

forming a sacrificial layer in a predetermined position on a substrate;

forming a base material containing resin on the substrate with the sacrificial layer therebetween, the base material having a contact region where the base material and the substrate are in contact with each other;

forming a display region including a plurality of pixels on the base material;

irradiating the substrate with laser light from a side of the substrate on which the base material is not formed; and

peeling the substrate from the base material, wherein

a frame region outside the display region is on the base material, and

the contact region is located at at least a part of the frame region.

2. The method of manufacturing a display device according to claim 1 , wherein

the frame region of the base material includes a first side,

the first side is on an edge of the base material, and

the contact region is located along the first side.

3. The method of manufacturing a display device according to claim 1 , wherein

the sacrificial layer is disposed at another part,

the another part overlaps with the frame region in a plan view, and

the another part is located without overlapping with the contact region in a plan view.

4. The method of manufacturing a display device according to claim 1 , wherein

the base material includes a component mounting region, and

the contact region is present in a first area and a second area,

the first area is between the display region and a first edge of the base material and includes the mounting region,

the second area is between the display region and a second edge of the base material, and

the first area and the second area are opposite side of the display region.

5. The method of manufacturing a display device according to claim 4 , wherein

the display region of the base material is formed so as to be covered by the sacrificial layer.

6. The method of manufacturing a display device according to claim 1 , wherein

the base material includes a component mounting region, and

the contact region is in any one of a first area and a second area,

the first area is between the display region and a first edge of the base material and includes the mounting region,

the second area is between the display region and a second edge of the base material, and

the first area and the second area are opposite side of the display region.

7. The method of manufacturing a display device according to claim 1 , wherein

a first region where the base material and the substrate are in contact with each other, a second region where the sacrificial layer is present, and a third region where the base material and the substrate are in contact with each other, and

the first region, the second region and the third region are disposed in this order from an edge of the base material, and

the second region overlaps with the display region.

8. The method of manufacturing a display device according to claim 7 , wherein

the sacrificial layer and the display region are adjacent to each other without overlapping with the display area in a plan view.

9. The method of manufacturing a display device according to claim 1 , wherein

a first region where the sacrificial layer overlapping an edge of the base material is present, and the contact region are disposed in this order from the edge of the base material, and

the contact region includes the display region.

10. The method of manufacturing a display device according to claim 1 , wherein

the sacrificial layer is disposed at least a part of an outer edge of the base material, and

the contact region is located in the display region.

11. The method of manufacturing a display device according to claim 10 , wherein

the sacrificial layer is disposed at two parts along edges of the base material including the edge of the base material, and

the method further comprises removing, the sacrificial layer after irradiation with the laser light, wherein

the display region is between the two parts.

12. The method of manufacturing a display device according to claim 10 , wherein

the sacrificial layer contains metal.

13. The method of manufacturing a display device according to claim 1 , wherein

the sacrificial layer transmits 0% to 99% of laser light transmitted through the substrate.

14. The method of manufacturing a display device according to claim 1 , wherein

the sacrificial layer contains one or more kinds selected from the group consisting of silicon nitride (SiN y ), silicon oxide (SiO x ), and a complex of SiN y and SiO x .

15. The method of manufacturing a display device according to claim 1 , wherein

the sacrificial layer contains amorphous silicon.

16. The method of manufacturing a display device according to claim 1 , wherein

the base material contains polyimide.

17. The method of manufacturing a display device according to claim 1 , wherein

the substrate is a glass substrate.

18. A display device comprising:

a flexible base material; and

a plurality of pixels located on the flexible base material, wherein

a major surface of the flexible base material is a side opposite to a surface on which the plurality of pixels are formed,

the major surface has a first area and a second area,

a surface of the first area is rougher than that of the second area.

19. The display device according to claim 18 , further comprising a display region including the plurality of pixels, and a frame region surrounding the display region, wherein

the first area overlaps the frame region in a plan view.

20. The display device according to claim 18 , further comprising a display region including the plurality of pixels, wherein

the first area is formed in an entire region of the display region.