Three-dimensional image display device

A 3D image display device comprising:

• a display panel configured to include a plurality of pixels arranged in a matrix shape and respectively representing one color among a plurality of primary colors, and light blockers provided between the pixels;
• and
• a viewpoint divider configured to divide an image which is displayed by the display panel into at least two viewpoints, the viewpoint divider including a plurality of viewpoint dividing units,
• wherein the viewpoint dividing units are located in parallel with respect to a column direction of the display panel,
• a number NP of pixels at a unit view region satisfies NP=2(3n+1)+1, a number NL of viewpoint dividing units satisfies NL=3n+1, and a number NV of viewpoints satisfies NV=2(3n+1)+1 when a width ratio of the pixels in a row direction and the light blockers in the row direction is 3n:1, n being a natural number, and
• the NP pixels are located to correspond to the NL viewpoint dividing units.