Patent ID: 7221093

Claim:
A device comprising: a substrate having a plurality of OLED cells, the OLED cells comprising at least one organic layer formed between first and second conductive layers, wherein the first conductive layer is adjacent to the substrate; and pillars on the substrate for patterning the second conductive layer, wherein at least one of the pillars includes first and second photosensitive layers with the first photosensitive layer disposed below and in contact with the second photosensitive layer, the first photosensitive layer forms a base of the pillar and the second photosensitive layer forms a cap of the pillar such that the cap overhangs the base, the base has a profile with a substantially sloped section and a lower portion of the base is wider than an upper portion; wherein side edges of the organic layer and side edges of the second conductive layer are in contact with only the sloped section of the base; and wherein the first photosensitive layer has a different composition from the second photosensitive layer.