PURPOSE: An organic electroluminescent display device is provided to improve yield by preventing a coupling phenomenon of a data line. CONSTITUTION: A plurality of sub pixels(P) is formed on a region in which a plurality of data lines(DL) and a plurality of gate lines(GL) are vertically crossed to each other. A drive power distribution line(ELVDD) supplies power source voltage. The power source voltage operates a sub pixel. The plurality of data lines is arranged in parallel to the drive power distribution line. A coupling blocking line(130) is arranged between adjacent data lines.
