Organic light emitting display having a single-layered anti-reflection layer of aluminum fluoride and method of fabricating the same

An organic light emitting display device, comprising:

• a first substrate comprising a single layer or multiple layers;
• a second substrate comprising a single layer or multiple layers, the second substrate comprising an inner surface facing the first substrate and an outer surface facing away from the first substrate;
• an array of organic light emitting pixels formed on the first substrate and interposed between the first and second substrates, the array comprising a top surface opposing the inner surface of the second substrate, wherein the top surface and the inner surface has a gap therebetween with a gap distance smaller than about 300 μm;
• a frit seal interconnecting the first and second substrates while surrounding the array, wherein the frit seal, the first substrate and the second substrate in combination define a sealed enclosed space in which the array is located such that the gap distance is smaller than about 300 μm;
• and
• an antireflection layer formed over at least one of the inner and outer surfaces of the second substrate, wherein the antireflection layer consists of a single layer of AlF3.