Patent ID: 7365488

Claim:
An organic electroluminescent display, comprising: a plurality of anode electrodes for red, green and blue unit pixels disposed on a substrate, the anode electrodes being separated from each other, and an anode electrode for at least one unit pixel of the red, green and blue unit pixels having a thickness different from thicknesses of anode electrodes of other unit pixels of the red, green and blue unit pixels; organic thin-film layers, one for each of the respective anode electrodes of the red, green and blue unit pixels, each organic thin-film layer being disposed on a respective one of the anode electrodes of the red, green and blue unit pixels; and a cathode electrode disposed over an entire surface of the substrate; wherein the anode electrode of each of the unit pixels includes a first film having a high reflectivity and a second film for adjusting a work function, and wherein the second film of said at least one unit pixel of the red, green and blue unit pixels has a thickness different from thicknesses of the second films of other unit pixels of the red, green and blue unitpixels; and wherein a thickness of the second film of the red unit pixel is in a range of one of 250 to 450Å and 700 to 750Å, and thicknesses of the second films of the green and blue unit pixels are in a range of 50 to 150 Å.