A display apparatus comprising: a first support member; a second support member arranged in a first direction from the first support member; a plurality of joint units arranged in the first direction, extending in a second direction perpendicular to the first direction, and disposed between the first and second support members (SM1, SM2); and a display module disposed on the first and second support members (SM1, SM2) and the joint units, the display module being flexible, wherein each of the joint units comprises: a body part extending in the second direction; and protruding parts (P1, P2) disposed on opposing sides of the body part when viewed in the first direction and on opposing upper ends of the body part when viewed in the second direction, each of the protruding parts having a fan shape when viewed in the second direction, wherein each of the protruding parts (P1, P2) comprises: a curved surface defined as an arc of the fan shape; a first inclined surface defined as a first radius of the fan shape; and a second inclined surface defined as a second radius of the fan shape, wherein an angle formed between the first inclined surface and a third direction perpendicular to a plane parallel with the first and second directions (DR1, DR2) is the same as an angle formed between the second inclined surface and the third direction, and wherein the curved surfaces of the protruding parts (P1, P2) disposed on the opposing upper ends of the body part face each other. a first support member; a second support member arranged in a first direction from the first support member; a plurality of joint units arranged in the first direction, extending in a second direction perpendicular to the first direction, and disposed between the first and second support members (SM1, SM2); and a display module disposed on the first and second support members (SM1, SM2) and the joint units, the display module being flexible, wherein each of the joint units comprises: a body part extending in the second direction; and protruding parts (P1, P2) disposed on opposing sides of the body part when viewed in the first direction and on opposing upper ends of the body part when viewed in the second direction, each of the protruding parts having a fan shape when viewed in the second direction, wherein each of the protruding parts (P1, P2) comprises: a curved surface defined as an arc of the fan shape; a first inclined surface defined as a first radius of the fan shape; and a second inclined surface defined as a second radius of the fan shape, wherein an angle formed between the first inclined surface and a third direction perpendicular to a plane parallel with the first and second directions (DR1, DR2) is the same as an angle formed between the second inclined surface and the third direction, and wherein the curved surfaces of the protruding parts (P1, P2) disposed on the opposing upper ends of the body part face each other. a body part extending in the second direction; and protruding parts (P1, P2) disposed on opposing sides of the body part when viewed in the first direction and on opposing upper ends of the body part when viewed in the second direction, each of the protruding parts having a fan shape when viewed in the second direction, wherein each of the protruding parts (P1, P2) comprises: a curved surface defined as an arc of the fan shape; a first inclined surface defined as a first radius of the fan shape; and a second inclined surface defined as a second radius of the fan shape, wherein an angle formed between the first inclined surface and a third direction perpendicular to a plane parallel with the first and second directions (DR1, DR2) is the same as an angle formed between the second inclined surface and the third direction, and wherein the curved surfaces of the protruding parts (P1, P2) disposed on the opposing upper ends of the body part face each other. a curved surface defined as an arc of the fan shape; a first inclined surface defined as a first radius of the fan shape; and a second inclined surface defined as a second radius of the fan shape, wherein an angle formed between the first inclined surface and a third direction perpendicular to a plane parallel with the first and second directions (DR1, DR2) is the same as an angle formed between the second inclined surface and the third direction, and wherein the curved surfaces of the protruding parts (P1, P2) disposed on the opposing upper ends of the body part face each other.