A display apparatus comprises a first plate including a first display panel and a first link member, wherein the first link member includes a first internal link configured to move in a longitudinal direction of the first link member, a second plate including a second display panel and a second link member, wherein the second link member includes a second internal link configured to move in a longitudinal direction of the second link member and a hinge member rotatably connecting the first link member to the second link member to thereby rotatably connect the first display panel to the second display panel, wherein at least of the first internal link and the second internal link include a first opposing link including a first rack, a second opposing link including a second rack facing the first rack, and a pinion gear interlocking the first opposing link and the second opposing link.