A method of fabricating a substrate for an organic electroluminescent display device includes forming a first electrode on a substrate in a pixel region and a non-pixel region, the first electrode including a first conductive material, forming an auxiliary electrode on the first electrode in the non-pixel region, the auxiliary electrode including a second conductive material and contacting the first electrode, the first and second conductive materials being different from one another, forming a bank corresponding to the auxiliary electrode, the bank surrounding the pixel region, forming an organic electroluminescent layer on the first electrode, the organic electroluminescent layer in the pixel region surrounded by the bank, and forming a second electrode on the organic electroluminescent layer, the second electrode corresponding to the organic electroluminescent layer.