The present invention narrows a picture frame size by deciding line widths of respective power source bus lines which supply electricity to organic EL elements of respective colors corresponding to current quantities of the respective power source bus lines. Red pixels, green pixels and blue pixels which are arranged in a matrix array and, and power source lines which are connected to the respective pixels are formed in a display region, and power source bus lines which supply electricity to these power source lines are formed in a picture frame region. The power source bus line for red of a large current quantity is arranged on a side close to the display region and the power source bus line for green of a small current quantity is arranged on an outer side.