Organic electroluminescent display device and method of forming the same

A method of forming a novel organic electroluminescent display device which comprises the steps of:

• forming a transparent anode of a plurality of stripes on a transparent supporting substrate;
• providing a plurality of separation walls between the stripes of the anode and over the transparent supporting substrate, wherein the separation walls have a height which is higher than a sum of a thickness of the anode and a predetermined value;
• forming an organic electroluminescent layer having a thickness corresponding to the above predetermined value over the anode and the separation walls;
• and
• placing a shadow mask having a plurality of slits on and in securely contact with top surfaces of the separation walls so that a metal material is evaporated through the shadow mask to selectively form a cathode of a plurality of stripes over the organic electroluminescent layer.