Flexible display
View Patent ↗Provided is a display device having a first region and a second region. The first region includes: a base film; a first layer located over the base film and including a transistor; and a second layer located over the first layer and including a light-emitting element electrically connected to the transistor. The second region includes: the base film; a substrate under the base substrate; and a wiring layer located over the base film and including a wiring extending from the first layer to an edge portion of the base film. A thickness of the substrate decreases with decreasing distance to the first region.
1. A display device comprising:
a first region including:
a base film;
a first layer over the base film, the first layer comprising a transistor; and
a second layer over the first layer, the second layer comprising a light-emitting element electrically connected to the transistor; and
a second region adjacent to the first region, the second region including:
the base film;
a substrate located on an opposite side of the base film with respect to the first layer; and
a wiring layer over the base film, the wiring layer comprising a wiring extending from the first layer to an edge portion of the base film,
wherein a thickness of the substrate decreases with decreasing distance to the first region.
2. The display device according to claim 1 ,
wherein the base film comprises a plurality of sides, and
wherein the second region is located along one of the plurality of sides.
3. The display device according to claim 1 ,
wherein a bottom surface of the base film is exposed in the first region.
4. The display device according to claim 1 ,
wherein the substrate has a taper shape, and
wherein an edge portion of the taper shape is in contact with the base film.
5. The display device according to claim 1 ,
wherein the substrate has a taper shape having a round edge portion.
6. The display device according to claim 1 ,
wherein the substrate has a taper shape, and
wherein an edge portion of the taper shape has a plane perpendicular to a surface of the base film.
7. The display device according to claim 1 ,
wherein the substrate includes glass or a resin.
8. The display device according to claim 1 , further comprising a third region,
wherein:
the first region is located between the second region and the third region;
the third region comprises:
the base film;
the first layer over the base film;
the second layer over the first layer; and
a second substrate located on an opposite side of the base film with respect to the first layer; and
a thickness of the second substrate decreases with decreasing distance to the first region.
9. The display device according to claim 8 ,
wherein the second substrate has a taper shape, and
wherein an edge portion of the taper shape of the second substrate is in contact with the base film.
10. The display device according to claim 8 ,
wherein the second substrate has a taper shape having a round edge portion.
11. The display device according to claim 8 ,
wherein the second substrate has a taper shape, and
wherein an edge portion of the taper shape of the second substrate has a plane perpendicular to a surface of the base film.
12. The display device according to claim 8 , further comprising a housing covering the substrate and the second substrate.
13. The display device according to claim 8 ,
wherein:
the base film has flexibility;
the display device has a four-folded shape; and
the substrate overlaps with the second substrate with the first region interposed therebetween.
14. The display device according to claim 13 , comprising:
a buffer substrate under the base film in the first region,
wherein, in the four-folded shape, the buffer substrate is surrounded by the base film.
15. The display device according to claim 14 ,
wherein the buffer substrate has a taper shape, and
wherein a thickness of the buffer substrate decreases with decreasing distance to the substrate.
16. The display device according to claim 14 ,
wherein the buffer substrate has a taper shape, and
wherein a thickness of the buffer substrate decreases with decreasing distance to the second substrate.
17. A display device comprising:
a first region comprising:
a base film;
a first layer over the base film, the first layer comprising a transistor; and
a second layer over the first layer, the second layer comprising a light-emitting element electrically connected to the transistor; and
a second region adjacent to the first region, the second region including:
the base film; and
a wiring layer over the base film, the wiring layer comprising a wiring extending from the first layer to an edge portion of the base film,
wherein a substrate is located on an opposite side of the base film with respect to the first layer and continues from the first region to the second region,
wherein a thickness of the substrate is constant in the first region, and
wherein, in the second region, a thickness of the substrate decreases with decreasing distance to the first region.
18. The display device according to claim 17 ,
wherein the base film comprises a plurality of sides, and
wherein the second region includes at least a part of an edge portion of the base film and is located along one of the plurality of sides.
19. The display device according to claim 17 ,
wherein the substrate has a taper shape having a round edge portion.
20. The display device according to claim 17 ,
wherein the substrate has a taper shape, and
wherein an edge portion of the taper shape has a plane perpendicular to a surface of the base film.