an organic light emitting display device for improving the yield and for reducing or minimizing manufacturing costs . the organic light emitting display device includes : a data driver coupled to data lines that are formed on the panel ; a scan driver mounted on the panel and coupled to scan lines that are formed on the panel ; input lines for receiving clock signals from the outside ; first connecting lines overlapped with a cathode electrode and electrically coupled to the input lines and for supplying the clock signals to the scan driver ; second connecting lines electrically coupled to the input lines ; and third connecting lines for electrically coupling the first connecting lines to the second connecting lines .