A display device comprising: a display panel having a long side (LS1, LS2) in a first direction, a short side (SS1, SS2) in a second direction, and a thickness in a third direction and including a front surface and a rear surface; a back cabinet at a rear of the display panel; a back cover provided between the back cabinet and the display panel, a case covering an edge of a front surface of the display panel, the case includes a horizontal case (410H1, 410H2) covering an edge of the front surface of the display panel on the long side (LS1, LS2) of the display panel and a vertical case (410V1, 410V2) covering an edge of the front surface of the display panel on the short side (SS1, SS2) of the display panel, a guide panel positioned adjacent to an edge of the display panel and coupled with the back cover, wherein the guide panel includes: a base part facing a part of the rear surface of the display panel; a side wall covering a side of the display panel; and a guide part protruding from the side wall toward the side of the display panel to support the side of the display panel, wherein the horizontal case (410H1, 410H2) includes: a first part extending in a parallel direction of the front surface of the display panel; a second part extending from an end of the first part in a perpendicular direction of the front surface of the display panel; and wherein an end of the back cabinet is extended with bending adjacent to the second part of the horizontal case (410H1, 410H2) such that an outer surface of a bent portion of the back cabinet faces an outer surface of the second part of the horizontal case (410H1, 410H2), and wherein an outer surface of the second part of the horizontal case (410H1,410H2) is protruded toward an outside of the display device further than an outer surface of the back cabinet in the parallel direction. a display panel having a long side (LS1, LS2) in a first direction, a short side (SS1, SS2) in a second direction, and a thickness in a third direction and including a front surface and a rear surface; a back cabinet at a rear of the display panel; a back cover provided between the back cabinet and the display panel, a case covering an edge of a front surface of the display panel, the case includes a horizontal case (410H1, 410H2) covering an edge of the front surface of the display panel on the long side (LS1, LS2) of the display panel and a vertical case (410V1, 410V2) covering an edge of the front surface of the display panel on the short side (SS1, SS2) of the display panel, a guide panel positioned adjacent to an edge of the display panel and coupled with the back cover, wherein the guide panel includes: a base part facing a part of the rear surface of the display panel; a side wall covering a side of the display panel; and a guide part protruding from the side wall toward the side of the display panel to support the side of the display panel, wherein the horizontal case (410H1, 410H2) includes: a first part extending in a parallel direction of the front surface of the display panel; a second part extending from an end of the first part in a perpendicular direction of the front surface of the display panel; and wherein an end of the back cabinet is extended with bending adjacent to the second part of the horizontal case (410H1, 410H2) such that an outer surface of a bent portion of the back cabinet faces an outer surface of the second part of the horizontal case (410H1, 410H2), and wherein an outer surface of the second part of the horizontal case (410H1,410H2) is protruded toward an outside of the display device further than an outer surface of the back cabinet in the parallel direction. a base part facing a part of the rear surface of the display panel; a side wall covering a side of the display panel; and a guide part protruding from the side wall toward the side of the display panel to support the side of the display panel, wherein the horizontal case (410H1, 410H2) includes: a first part extending in a parallel direction of the front surface of the display panel; a second part extending from an end of the first part in a perpendicular direction of the front surface of the display panel; and wherein an end of the back cabinet is extended with bending adjacent to the second part of the horizontal case (410H1, 410H2) such that an outer surface of a bent portion of the back cabinet faces an outer surface of the second part of the horizontal case (410H1, 410H2), and wherein an outer surface of the second part of the horizontal case (410H1,410H2) is protruded toward an outside of the display device further than an outer surface of the back cabinet in the parallel direction. a first part extending in a parallel direction of the front surface of the display panel; a second part extending from an end of the first part in a perpendicular direction of the front surface of the display panel; and wherein an end of the back cabinet is extended with bending adjacent to the second part of the horizontal case (410H1, 410H2) such that an outer surface of a bent portion of the back cabinet faces an outer surface of the second part of the horizontal case (410H1, 410H2), and wherein an outer surface of the second part of the horizontal case (410H1,410H2) is protruded toward an outside of the display device further than an outer surface of the back cabinet in the parallel direction.