A flexible display apparatus, comprising: a flexible display module comprising a flexible display panel; a frame module configured to receive the flexible display panel; and a panel elevating module configured to enable the winding or unwinding of the flexible display panel within the frame module; wherein the panel elevating module comprises at least one retractable unit configured to be fold or unfold; wherein the at least one retractable unit comprises a plurality of first links, a plurality of second links and a plurality of hinges, wherein each hinge couples one first link with a corresponding second link, to form a pantograph structure; a plurality of joint members, a plurality of elastic members, each elastic member being arranged at an end portion of an associated first link and at an end portion of an associated second link and being supported by the end portions of the associated first and second links, wherein each elastic member comprises a torsion spring (339-1, 339-2) configured to surround the associated joint member which supports one side of each of the vertically adjacent first and second links (331, 333); characterised in that the first link further comprises: a plurality of first link plates; a plurality of second link plates; wherein the first and second link plates (331a, 331b) are arranged in parallel to face each other with a first gap space interposed therebetween and are rotatably supported at the central portions thereof by the hinge and both side edge portions of the respective first and second link plates (331a, 331b) are rotatably supported by the joint member; and wherein the second link further comprises: a plurality of third link plates; a plurality of fourth link plates; wherein the third and fourth link plates (333a, 333b) are arranged in parallel to face each other with a second gap space interposed therebetween and are rotatably supported at the central portions thereof by the hinge which supports the central portion of a corresponding first link and are rotatable in the first gap between the first and second link plates (331a, 331b) about the hinge. a flexible display module comprising a flexible display panel; a frame module configured to receive the flexible display panel; and a panel elevating module configured to enable the winding or unwinding of the flexible display panel within the frame module; wherein the panel elevating module comprises at least one retractable unit configured to be fold or unfold; wherein the at least one retractable unit comprises a plurality of first links, a plurality of second links and a plurality of hinges, wherein each hinge couples one first link with a corresponding second link, to form a pantograph structure; a plurality of joint members, a plurality of elastic members, each elastic member being arranged at an end portion of an associated first link and at an end portion of an associated second link and being supported by the end portions of the associated first and second links, wherein each elastic member comprises a torsion spring (339-1, 339-2) configured to surround the associated joint member which supports one side of each of the vertically adjacent first and second links (331, 333); characterised in that the first link further comprises: a plurality of first link plates; a plurality of second link plates; wherein the first and second link plates (331a, 331b) are arranged in parallel to face each other with a first gap space interposed therebetween and are rotatably supported at the central portions thereof by the hinge and both side edge portions of the respective first and second link plates (331a, 331b) are rotatably supported by the joint member; and wherein the second link further comprises: a plurality of third link plates; a plurality of fourth link plates; wherein the third and fourth link plates (333a, 333b) are arranged in parallel to face each other with a second gap space interposed therebetween and are rotatably supported at the central portions thereof by the hinge which supports the central portion of a corresponding first link and are rotatable in the first gap between the first and second link plates (331a, 331b) about the hinge. a plurality of first link plates; a plurality of second link plates; wherein the first and second link plates (331a, 331b) are arranged in parallel to face each other with a first gap space interposed therebetween and are rotatably supported at the central portions thereof by the hinge and both side edge portions of the respective first and second link plates (331a, 331b) are rotatably supported by the joint member; and wherein the second link further comprises: a plurality of third link plates; a plurality of fourth link plates; wherein the third and fourth link plates (333a, 333b) are arranged in parallel to face each other with a second gap space interposed therebetween and are rotatably supported at the central portions thereof by the hinge which supports the central portion of a corresponding first link and are rotatable in the first gap between the first and second link plates (331a, 331b) about the hinge. a plurality of third link plates; a plurality of fourth link plates; wherein the third and fourth link plates (333a, 333b) are arranged in parallel to face each other with a second gap space interposed therebetween and are rotatably supported at the central portions thereof by the hinge which supports the central portion of a corresponding first link and are rotatable in the first gap between the first and second link plates (331a, 331b) about the hinge.