A display device comprising: a display unit comprising a display panel ; an audio-video, AV, box configured to form an electric control unit, wherein the AV box has a transmission interface integrated circuit, IC, a controller, a main board in which the controller is loaded and a power supply unit configured to supply electric power; and a first cable configured to electrically connect the display unit with the AV box , wherein the display unit comprises, a source printed circuit board, PCB, , having signal wires for transmitting digital video data and timing control signals being located in the source PCB ; a second cable configured to connect the display panel with the source PCB ; an interface board electrically connected with the source PCB and having a reception interface IC to receive a signal from the transmission interface IC and transmitting the signal to the source PCB ; a third cable configured to connect the interface board with the source PCB ; and a module cover configured to cover the rear surface of the display panel , characterized in that the module cover includes an opening exposing at least a first contact point between the interface board and the first cable , and a first recessed area recessed forwardly from a rear surface of the module cover and configured to accommodate at least a portion of the first cable therein, wherein the display device further comprising a back cover to cover the opening , and wherein the source PCB is provided in an upper end of a rear surface of the display panel , wherein the interface board is provided below the source PCB on the rear surface of the display panel , and wherein the first cable extends from a lower end of the interface board through the first recessed area of the module cover to connect with the AV box . a display unit comprising a display panel ; an audio-video, AV, box configured to form an electric control unit, wherein the AV box has a transmission interface integrated circuit, IC, a controller, a main board in which the controller is loaded and a power supply unit configured to supply electric power; and a first cable configured to electrically connect the display unit with the AV box , wherein the display unit comprises, a source printed circuit board, PCB, , having signal wires for transmitting digital video data and timing control signals being located in the source PCB ; a second cable configured to connect the display panel with the source PCB ; an interface board electrically connected with the source PCB and having a reception interface IC to receive a signal from the transmission interface IC and transmitting the signal to the source PCB ; a third cable configured to connect the interface board with the source PCB ; and a module cover configured to cover the rear surface of the display panel , characterized in that the module cover includes an opening exposing at least a first contact point between the interface board and the first cable , and a first recessed area recessed forwardly from a rear surface of the module cover and configured to accommodate at least a portion of the first cable therein, wherein the display device further comprising a back cover to cover the opening , and wherein the source PCB is provided in an upper end of a rear surface of the display panel , wherein the interface board is provided below the source PCB on the rear surface of the display panel , and wherein the first cable extends from a lower end of the interface board through the first recessed area of the module cover to connect with the AV box . <EOS>