Patent ID: 8686629

Claim:
An organic light emitting display device (OLED), comprising: a transparent substrate; a first electrode on the transparent substrate; a partition wall on the first electrode, the partition wall including a first silicon nitride film pattern and a second silicon nitride film pattern, and the second silicon nitride film pattern is thicker than the first silicon nitride film pattern, wherein the first silicon nitride film pattern has a forwardly-tapered shape, and the second silicon nitride film pattern has an inversely-tapered shape, and the first silicon nitride film pattern and the second silicon nitride film pattern have different composition ratios between their silicon and nitrogen contents from each other, and wherein the first silicon nitride film pattern and the second nitride film pattern are formed simultaneously; an organic light emitting layer stacked on both sides of the first electrode below a level of the partition wall; and a second electrode on the organic emitting layer, wherein the first silicon nitride film pattern is formed by the forwardly-tapered shape to form the organic light emitting layer adjacent to the partition wall in a uniform thickness, and the second silicon nitride film pattern is formed by the inversely-tapered shape to separate the second electrode, wherein the first silicon nitride film pattern having the forwardly-tapered shape and the second silicon nitride film pattern having the inversely-tapered shape have substantially equal widths where they contact each other at an interface; and ends of the organic emitting layer are located on slanted portions of the forwardly-tapered shape of the first silicon nitride film pattern.