A display apparatus comprising: a chassis configured to support a display module; a cover detachably couplable to the chassis; a first coupling unit provided on one of the chassis and the cover and provided with a linear member having an elasticity; and a second coupling unit provided on the other of the chassis and the cover and detachably couplable to the first coupling unit, wherein the second coupling unit presses the linear member in a first direction perpendicular to a second direction in which the cover is coupled to the chassis, wherein in response to contraction or expansion of the cover, the second coupling unit and the linear member are adapted to move with respect to the chassis in order to maintain a coupling state between them, wherein the second coupling unit is formed in a hook shape and includes a body extended from the cover in the second direction, and a coupling part protruded from one surface of the body in the first direction, wherein when the second coupling unit is coupled to the first coupling unit, the body presses on the linear member of the first coupling unit in the first direction and the coupling part prevents the second coupling unit from being detached from the first coupling unit in the second direction, and characterised in that: the second coupling unit includes a detaching guide part configured to allow the coupling part to be detached from the linear member, wherein the detaching guide part is a slanted edge of the coupling part, disposed on one or both side of the coupling part and formed such that a protrusion height of the coupling part is reduced from its most protruded portion to a respective edge of the body. a chassis configured to support a display module; a cover detachably couplable to the chassis; a first coupling unit provided on one of the chassis and the cover and provided with a linear member having an elasticity; and a second coupling unit provided on the other of the chassis and the cover and detachably couplable to the first coupling unit, wherein the second coupling unit presses the linear member in a first direction perpendicular to a second direction in which the cover is coupled to the chassis, wherein in response to contraction or expansion of the cover, the second coupling unit and the linear member are adapted to move with respect to the chassis in order to maintain a coupling state between them, wherein the second coupling unit is formed in a hook shape and includes a body extended from the cover in the second direction, and a coupling part protruded from one surface of the body in the first direction, wherein when the second coupling unit is coupled to the first coupling unit, the body presses on the linear member of the first coupling unit in the first direction and the coupling part prevents the second coupling unit from being detached from the first coupling unit in the second direction, and characterised in that: the second coupling unit includes a detaching guide part configured to allow the coupling part to be detached from the linear member, wherein the detaching guide part is a slanted edge of the coupling part, disposed on one or both side of the coupling part and formed such that a protrusion height of the coupling part is reduced from its most protruded portion to a respective edge of the body. the second coupling unit includes a detaching guide part configured to allow the coupling part to be detached from the linear member, wherein the detaching guide part is a slanted edge of the coupling part, disposed on one or both side of the coupling part and formed such that a protrusion height of the coupling part is reduced from its most protruded portion to a respective edge of the body.