Display device and method for manufacturing display board

A display device, comprising:

• a display board comprising a display region that comprises a plurality of regions each having a different polarization direction due to a difference in absorption axis direction;
• and
• a light source that emits an illumination light having a polarization direction along a direction of a first absorption axis or along a direction of a second absorption axis perpendicular to the first absorption axis,
• wherein the display region comprises a first region comprising a region polarization-microfabricated in the direction of the first absorption axis, a second region comprising a region polarization-microfabricated in the direction of the second absorption axis, and a third region that transmits the illumination light,
• wherein only the first region and the third region are displayed on the display board by emitting the illumination light having a polarization direction along the direction of the second absorption axis,
• wherein only the second region and the third region are displayed on the display board by emitting the illumination light having a polarization direction along the direction of the first absorption axis, and
• wherein the display board comprises a single substrate on a surface of which the first to third regions are directly formed.