Optical sheet and a tiled display including the same

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.

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.