Abstract: An elastic member according to an embodiment comprises a first area and a second area, wherein the first area is defined as a folding area and the second area is defined as an unfolding area, wherein the elastic member comprises: a first direction defined as a width direction of the elastic member; and a second direction defined as a length direction of the elastic member, wherein the first area comprises a 1-1 area close to a folding axis, and a 1-2 area that is further from the folding axis than the 1-1 area, wherein the first area comprises a first pattern portion extending in the first direction, the first area comprises a bridge portion extending the first pattern portion in the second direction, and the number of the bridge portion in the 1-1 area is 50% or less than the number of bridges in the 1-2 area in the first area.

Abstract: An elastic member according to an embodiment comprises: a first area; and a second area, the first area being defined as a folding area and the second area being defined as an unfolding area, wherein the elastic member comprises a first layer, a second layer on the first layer, and a third layer between the first layer and the second layer, the first layer comprises a metal, the second layer comprises a metal or plastic, the first layer comprises a plurality of pattern portions having a hole or groove shape, the third layer has a storage modulus of 29-150 kPa, and the third layer contacts the first layer with a first adhesive strength and contacts the second layer with a second adhesive strength, and the first adhesive strength and the second adhesive strength are 400-1800 gf/in.

Abstract: Proposed is an elastic member capable of ensuring folding reliability and preventing deformation of a substrate, the elastic member comprising: a first surface; and a second surface opposite to the first surface, wherein the elastic member includes a first area and a second area, wherein the first area comprises: a first pattern portion in which a plurality of first patterns are arranged extending in a first direction; and a second pattern portion in which a plurality of second patterns are arranged extending in the first direction and which partially overlaps with the first pattern portion in a second direction different from the first direction, and the second area comprises: a third pattern portion in which a plurality of third patterns are arranged extending in the first direction; and a fourth pattern portion in which a plurality of fourth patterns are arranged extending in the first direction and which partially overlaps with the third pattern portion in the second direction different from the first dir

Abstract: A resilient member according to an embodiment comprises one surface and the other surface opposite from the one surface. In a resilient member comprising a first area and a second area, the first area is defined as a folding area, and the second area is defined as a non-folding area. A plurality of first patterns are formed on the first area, and a plurality of second patterns are formed on the second area. The first patterns or the second patterns are formed by holes or grooves. The surface area of second openings, which are formed by the holes or grooves of the second patterns on the one surface or the other surface, differ from one another within the second area.