A flat panel display device comprising: - a body comprising: • a first body; • a first bending portion; • a second body; • a second bending portion; • a third body, the first, second and third bodies (110, 120, 130) being connected to each other by means of the first bending portion provided between the first body and the second body and the second bending portion provided between the second body and the third body, wherein the first bending portion allows the first body to rotate towards the second body, wherein the second bending portion allows the third body to rotate towards the second body; • a first sloping surface formed at one edge of the first body; • a second sloping surface formed at one edge of the third body, the first and second sloping surfaces (111, 131) being formed at opposite edges of the body and on a cross-section perpendicular to the plane of the body and to the direction of the opposite edges; and - a flexible display screen disposed on one side of the body and comprising: • a first screen supported by the first body; • a part supported by the first bending portion; • a second screen supported by the second body; • a part supported by the second bending portion; and • a third screen supported by the third body to thus form a continuous screen, wherein the first sloping surface is such that it can be attached to a region of the surface of the second body when the first body rotates on the first bending portion, wherein the second sloping surface is such that it can be attached to a region of the surface of the first screen when the third body is rotated on the second bending portion, in a state in which the first body was previously rotated on the first bending portion. - a body comprising: • a first body; • a first bending portion; • a second body; • a second bending portion; • a third body, the first, second and third bodies (110, 120, 130) being connected to each other by means of the first bending portion provided between the first body and the second body and the second bending portion provided between the second body and the third body, wherein the first bending portion allows the first body to rotate towards the second body, wherein the second bending portion allows the third body to rotate towards the second body; • a first sloping surface formed at one edge of the first body; • a second sloping surface formed at one edge of the third body, the first and second sloping surfaces (111, 131) being formed at opposite edges of the body and on a cross-section perpendicular to the plane of the body and to the direction of the opposite edges; and • a first body; • a first bending portion; • a second body; • a second bending portion; • a third body, the first, second and third bodies (110, 120, 130) being connected to each other by means of the first bending portion provided between the first body and the second body and the second bending portion provided between the second body and the third body, wherein the first bending portion allows the first body to rotate towards the second body, wherein the second bending portion allows the third body to rotate towards the second body; • a first sloping surface formed at one edge of the first body; • a second sloping surface formed at one edge of the third body, the first and second sloping surfaces (111, 131) being formed at opposite edges of the body and on a cross-section perpendicular to the plane of the body and to the direction of the opposite edges; and - a flexible display screen disposed on one side of the body and comprising: • a first screen supported by the first body; • a part supported by the first bending portion; • a second screen supported by the second body; • a part supported by the second bending portion; and • a third screen supported by the third body to thus form a continuous screen, • a first screen supported by the first body; • a part supported by the first bending portion; • a second screen supported by the second body; • a part supported by the second bending portion; and • a third screen supported by the third body to thus form a continuous screen,