Display device

A display device, comprising:

• a display panel including first to fourth pixels in a first direction, wherein each of the first to fourth pixels has a first width in the first direction and a length more than the width and in a second direction;
• and
• a backlight unit including first and second line light regions supplying light to the display panel to display three-dimensional images,
• wherein the first and second line light regions have a slanted angle in plane with respect to the second direction,
• wherein light from the first line light region comes to right and left eyes of a viewer through the first and second pixels, respectively, and light from the second line light region comes to the right and left eyes through the third and fourth pixels, respectively,
• wherein the display device has K view points,
• wherein the first and second line light regions are slanted in plane with respect to the first direction, and
• wherein the slanted angle is expressed by a expression, θ=tan−1((M*Pa)/(N*Pb), where Pa is the first width, Pb is the length of each pixel, and M and N are each natural numbers.