Mask device, method of fabricating the same, and method of fabricating organic light emitting display device using the same

A method of fabricating an organic light emitting display device (OLED), comprising:

• forming a first electrode over a substrate;
• inserting the substrate having the first electrode into a deposition chamber that includes a mask device such that the longitudinal direction of a striped aperture region is parallel to the roll direction of the mask substrate;
• depositing an organic layer that includes an emission layer on the substrate;
• removing the substrate to the exterior of the deposition chamber;
• and
• forming a second electrode over the entire surface of the substrate.

An organic light emitting display device (OLED), comprising:

• a substrate;
• a first electrode over the substrate;
• an organic layer that includes an emission layer on the substrate;
• and
• a second electrode over the entire surface of the substrate, wherein:
• the emission layer is formed in a striped aperture pattern,
• the striped apertures are arranged in a direction parallel to the roll direction of a mask substrate, and
• the striped apertures have a degree of straightness of 6 μm or less.