A display device, comprising: a display panel having a display area, in which a plurality of pixels and at least one power line for supplying power to the pixels are formed, and a non-display area outside the display area; a cover disposed over the display panel so as to cover the display area of the display panel, and at least one pad (312; 612; 712; 812) in the non-display area at a first side of the display area, electrically coupled to at least one source driving IC (330; 630; 730; 830) and comprising at least one area configured to receive a data signal, wherein the cover comprises at least one electrically conductive portion coupled to the at least one power line and configured to receive at least one power supply voltage via the non-display area and supply the at least one power supply voltage to the at least one power line in the display area, the at least one source driving IC (330; 630; 730; 830) in the non-display area at the first side of the display area and coupled to the at least one electrically conductive portion of the cover, and wherein the at least one power line is connected to the at least one electrically conductive portion of the cover at a second side of the display area that is opposite the first side of the display area, the display device further comprising at least one additional power line in the display area, coupled to the at least one source driving IC at the first side of the display area so as to receive the at least one power supply voltage directly from the at least one source driving IC without the at least one electrically conductive portion of the cover coupled in-between, characterized in that the at least one pad is configured to receive the at least one power supply voltage from outside and the at least one source driving IC is configured to receive the at least one power supply voltage via the at least one pad and to supply the at least one power supply voltage to the at least one electrically conductive portion of the cover and the display area from the first side; or characterized in that the at least one source driving IC (730; 830) is configured to receive the at least one power supply voltage from outside and supply the at least one power supply voltage from the first side to the display area and to the at least one electrically conductive portion of the cover through the at least one pad or directly. a display panel having a display area, in which a plurality of pixels and at least one power line for supplying power to the pixels are formed, and a non-display area outside the display area; a cover disposed over the display panel so as to cover the display area of the display panel, and at least one pad (312; 612; 712; 812) in the non-display area at a first side of the display area, electrically coupled to at least one source driving IC (330; 630; 730; 830) and comprising at least one area configured to receive a data signal, wherein the cover comprises at least one electrically conductive portion coupled to the at least one power line and configured to receive at least one power supply voltage via the non-display area and supply the at least one power supply voltage to the at least one power line in the display area, the at least one source driving IC (330; 630; 730; 830) in the non-display area at the first side of the display area and coupled to the at least one electrically conductive portion of the cover, and wherein the at least one power line is connected to the at least one electrically conductive portion of the cover at a second side of the display area that is opposite the first side of the display area, the display device further comprising at least one additional power line in the display area, coupled to the at least one source driving IC at the first side of the display area so as to receive the at least one power supply voltage directly from the at least one source driving IC without the at least one electrically conductive portion of the cover coupled in-between, characterized in that the at least one pad is configured to receive the at least one power supply voltage from outside and the at least one source driving IC is configured to receive the at least one power supply voltage via the at least one pad and to supply the at least one power supply voltage to the at least one electrically conductive portion of the cover and the display area from the first side; or characterized in that the at least one source driving IC (730; 830) is configured to receive the at least one power supply voltage from outside and supply the at least one power supply voltage from the first side to the display area and to the at least one electrically conductive portion of the cover through the at least one pad or directly.