A display device comprising: a substrate including a pixel region and a peripheral region; a plurality of pixels disposed in the pixel region of the substrate, each of the plurality of pixels including a light emitting element (OLED); data lines and scan lines connected to each of the plurality of pixels; and a power line arrangement configured to supply power to the plurality of pixels, the power line arrangement comprising a first conductive layer and a second conductive layer overlapping the first conductive layer, wherein the second conductive layer of the power line arrangement comprises: a plurality of first conductive lines; and a plurality of second conductive lines intersecting the plurality of first conductive lines, the plurality of second conductive lines each being arranged in a region between adjacent light emitting elements (OLED) of the plurality of pixels without overlapping the light emitting elements (OLED), wherein at least some portions of the plurality of second conductive lines extend in a direction oblique to a direction of extension of the data lines or the scan lines; wherein the first conductive lines and the second conductive lines are electrically connected to each other, wherein the second conductive layer has a mesh form, and characterised in that the plurality of first conductive lines extend in a direction parallel to the direction of extension of the data lines; or the plurality of first conductive lines and the plurality of second conductive lines extend in a direction oblique to the direction of extension of the data lines or the direction of extension of the scan lines. a substrate including a pixel region and a peripheral region; a plurality of pixels disposed in the pixel region of the substrate, each of the plurality of pixels including a light emitting element (OLED); data lines and scan lines connected to each of the plurality of pixels; and a power line arrangement configured to supply power to the plurality of pixels, the power line arrangement comprising a first conductive layer and a second conductive layer overlapping the first conductive layer, wherein the second conductive layer of the power line arrangement comprises: a plurality of first conductive lines; and a plurality of second conductive lines intersecting the plurality of first conductive lines, the plurality of second conductive lines each being arranged in a region between adjacent light emitting elements (OLED) of the plurality of pixels without overlapping the light emitting elements (OLED), wherein at least some portions of the plurality of second conductive lines extend in a direction oblique to a direction of extension of the data lines or the scan lines; wherein the first conductive lines and the second conductive lines are electrically connected to each other, wherein the second conductive layer has a mesh form, and characterised in that the plurality of first conductive lines extend in a direction parallel to the direction of extension of the data lines; or the plurality of first conductive lines and the plurality of second conductive lines extend in a direction oblique to the direction of extension of the data lines or the direction of extension of the scan lines. a plurality of first conductive lines; and a plurality of second conductive lines intersecting the plurality of first conductive lines, the plurality of second conductive lines each being arranged in a region between adjacent light emitting elements (OLED) of the plurality of pixels without overlapping the light emitting elements (OLED), wherein at least some portions of the plurality of second conductive lines extend in a direction oblique to a direction of extension of the data lines or the scan lines; wherein the first conductive lines and the second conductive lines are electrically connected to each other, wherein the second conductive layer has a mesh form, and characterised in that the plurality of first conductive lines extend in a direction parallel to the direction of extension of the data lines; or the plurality of first conductive lines and the plurality of second conductive lines extend in a direction oblique to the direction of extension of the data lines or the direction of extension of the scan lines. characterised in that the plurality of first conductive lines extend in a direction parallel to the direction of extension of the data lines; or the plurality of first conductive lines and the plurality of second conductive lines extend in a direction oblique to the direction of extension of the data lines or the direction of extension of the scan lines.