Abstract: A foldable display device includes a display panel including a folding area and non-folding areas on both sides of the folding area and a back plate disposed under the display panel; and a support substrate disposed under the back plate and made of a metal or alloy including a plurality of pores, the support substrate includes a plurality of groove patterns recessed from a bottom surface toward a top surface of the support substrate and corresponding to the folding area, thereby minimizing recognition of the patterns in the folding area of the display panel and improve the folding properties.

Abstract: Provided is an organic light emitting display device. The organic light emitting display device comprises a substrate including an active area and a non-active area enclosing the active area; a first inorganic encapsulation layer disposed in the active area and at least a part of the non-active area on the substrate; an organic encapsulation layer disposed on the first inorganic encapsulation layer; a second inorganic encapsulation layer disposed on the organic encapsulation layer; and a dam disposed between the first inorganic encapsulation layer and the second inorganic encapsulation layer in the non-active area. At least a part of the organic encapsulation layer is in contact with one surface of the dam.

Abstract: A foldable display device includes a display panel including a folding area and non-folding areas on both sides of the folding area and a back plate disposed under the display panel; and a support substrate disposed under the back plate and made of a metal or alloy including a plurality of pores, the support substrate includes a plurality of groove patterns recessed from a bottom surface toward a top surface of the support substrate and corresponding to the folding area, thereby minimizing recognition of the patterns in the folding area of the display panel and improve the folding properties.