Optical sheet and a tiled display including the same

1. A tiled display device, comprising:

a plurality of display panels comprising a first display panel including a plurality of pixels and a second display panel including a plurality of pixels;

a first lenticular pattern disposed between the first display panel or the second display panel and a base film;

a first prism pattern disposed on the base film; and

a chassis disposed between and fixing the plurality of display panels,

wherein the tiled display device displays an image and the first display panel displays a first portion of the image and the second display panel displays a second portion of the image different from the first portion.

2. The tiled display device of claim 1 , wherein the first lenticular pattern is disposed only adjacent to boundaries of the plurality of display panels, and the first prism pattern is disposed only adjacent to the boundaries of the plurality of display panels.

3. The tiled display device of claim 2 , wherein the first prism pattern is part of a plurality of prism patterns covering an entire width of the chassis.

4. The tiled display device of claim 2 , wherein a ratio of a width of the first lenticular pattern to a width of the first prism pattern is in a range of about 1:1 to about 6:1.

5. A tiled display device, comprising:

a plurality of display panels comprising a first display panel including a plurality of pixels and a second display panel including a plurality of pixels;

a first lenticular pattern disposed on the first display panel and the second display panel;

a base film disposed on the first lenticular pattern;

a first prism pattern disposed on the base film; and

a chassis disposed between the plurality of display panels,

the tiled display device further comprising a second lenticular pattern separated from the first lenticular pattern, wherein a ratio of the width of the first lenticular pattern to a distance by which the first and second lenticular patterns are separated along the same plane is in a range of about 1:1 to about 8:1.

6. The tiled display device of claim 5 , further comprising a second prism pattern, wherein boundaries of the first and second prism patterns meet each other.

7. The tiled display device of claim 5 , wherein the width of the first lenticular pattern is less than about 200 μm.

8. The tiled display device of claim 7 , wherein a curvature angle of the first lenticular pattern is in a range of about 30 degrees to about 60 degrees, and a curvature radius ratio of the first lenticular pattern is in a range of about 0.5 to about 5.

9. The tiled display device of claim 5 , wherein the width of the first prism pattern is more than about 50 μm.

10. The tiled display device of claim 9 , wherein an angle of a top portion of the first prism pattern is in a range of about 70 degrees to about 110 degrees.

11. An optical sheet, comprising:

a base film;

a first lenticular pattern disposed on a first side of the base film, the first lenticular pattern comprising a curved surface and a first flat surface, the first flat surface disposed on the first side of the base film; and

a first prism pattern disposed on a second side of the base film, the first prism pattern comprising a slanted surface protruding in a direction opposite that which the curved surface protrudes and a second flat surface, the second flat surface disposed on the second side of the base film,

wherein a curvature angle of the first lenticular pattern is in a range of about 30 degrees to about 60 degrees, and a curvature radius ratio of the first lenticular pattern is in a range of about 0.5 to about 5.

12. The optical sheet of claim 11 , wherein a ratio of a width of the first lenticular pattern to a width of the first prism pattern is in a range of about 1:1 to about 6:1.

13. The optical sheet of claim 11 , further comprising a second lenticular pattern separated from the first lenticular pattern, wherein a ratio of a width of the first lenticular pattern to a distance by which the first and second lenticular patterns are separated along the same plane is in a range of about 1:1 to about 8:1.

14. The optical sheet of claim 13 , further comprising a second prism pattern, wherein boundaries of the first and second prism patterns meet each other.

15. The optical sheet of claim 13 , wherein a width of the first lenticular pattern is less than about 200 μm.

16. The optical sheet of claim 15 , wherein a width of the first prism pattern is more than about 50 μm.

17. The optical sheet of claim 16 , wherein an angle of a top portion of the first prism pattern is in a range of about 70 degrees to about 110 degrees.

18. The optical sheet of claim 11 , wherein the first prism pattern overlaps the first lenticular pattern.