Hologram display device

A hologram display device, comprising:

• a light source unit that generates light;
• a spatial light modulation panel that spatially modulates the light received from the light source unit and generates diffracted light;
• and
• an optical unit that generates a holographic image using the diffracted light, wherein the optical unit includes at least one lens,
• wherein the spatial light modulation panel comprises:
• a plurality of pixels, and each of the pixels comprises first, second, third, and
• fourth sub-pixels;
• a plurality of first color filters;
• a plurality of second color filters;
• and
• a plurality of third color filters, wherein
• a number of the second color filters is greater than a number of each of the first and third color filters, and
• during a turned-on state of the spatial light modulation panel,
• a distance in a plan view between second color images displayed through a first group of the second color filters is substantially equal to a distance in a plan view between first color images displayed through the first color filters and a distance in a plan view between third color images displayed through the third color filters, and
• wherein the first, second, third, and fourth sub-pixels correspond to one first color filter, one third color filter, and two second color filters.