Display device

A display device comprising:

• a display module comprising a first non-folding area, a folding area, and a second non-folding area, which are arranged in a second direction crossing a first direction;
• and
• a folding set disposed on a first surface of the display module and defining a first rotation axis and a second rotation axis, which each extend in the first direction and are spaced apart from each other in the second direction,
• wherein a first axis parallel to the second direction and overlapping a second surface of the display module opposite to the first surface of the display module and a second axis perpendicular to the surface of the display module at a center of the folding set are defined, and the first rotation axis is symmetrical to the second rotation axis with respect to the second axis,
• wherein a first coordinate and a second coordinate of the second rotation axis are determined by equations below:
• (G/2)+T≤X≤(L/2);
• and
• Y=−X+(G/2),
• wherein X denotes the first coordinate, G denotes a distance between the first non-folding area and the second non-folding area when the display module is folded, T denotes a thickness of the display module measured with respect to the second axis, L denotes a length of the folding area with respect to the second direction, and Y denotes the second coordinate.