Supporting element including fiber reinforced plastics and foldable display device including the same

A foldable display device comprising:

• a display panel including a foldable area which is folded based on a folding axis;
• and
• a supporting member disposed under the display panel and including:
• a folding portion which corresponds to the foldable area of the display panel and in which a plurality of through-holes defined by a laser, the folding portion including:
• a first region including an edge portion in contact with an end portion of the supporting member;
• and
• a second region disposed adjacent to the first region in a folding axis direction;
• and
• a fiber reinforced plastic,
• wherein
• through-holes of the plurality of through-holes disposed in the first region and through-holes of the plurality of through-holes disposed in the second region are processed by lasers of different pulse energy, and
• the through-holes disposed in the first region are processed with a laser of a first pulse energy, and the through-holes disposed in the second region are processed with a laser of a second pulse energy, which is a higher energy than the first pulse energy.

A supporting member comprising:

• a folding portion which is folded based on a folding axis and in which a plurality of through-holes is defined by laser processing, the folding portion including:
• a first region including an edge portion in contact with an end portion of the supporting member;
• and
• a second region disposed adjacent to the first region in a folding axis direction, and
• a fiber reinforced plastic,
• wherein
• each of the plurality of through-holes includes an affected zone which is disposed at a boundary of a through-hole of the plurality of through-holes and
• in which a physical or chemical change has occurred at one surface of the supporting member,
• a width of the affected zone of through-holes of the plurality of through-holes disposed in the first region is different from a width of the affected zone of through-holes of the plurality of through-holes disposed in the second region, and
• the through-holes disposed in the first region are processed by a laser of a first pulse energy, and the through-holes disposed in the second region are processed by a laser of a second pulse energy different from the first pulse energy.