Patent ID: 8486737

Claim:
A method of manufacturing an organic light-emitting display device by using a thin film deposition apparatus for forming a thin film on a substrate, the thin film deposition apparatus including a deposition source nozzle unit including a plurality of deposition source nozzles, a patterning slit sheet including a plurality of patterning slits and patterning ribs, and a plurality of heat dissipation units on the patterning slit sheet, each of the pattering ribs disposed between neighboring patterning slits of the plurality of patterning slits, the plurality of heat dissipation units disposed on a surface of the patterning ribs facing the deposition source nozzle unit, the method comprising: arranging the substrate to be separated from the thin film deposition apparatus by a predetermined distance at a first side of the patterning slit sheet, the deposition source nozzle unit being at a second side of the patterning slit sheet opposite the first side, the predetermined distance being smaller than a distance from the deposition source nozzle unit to the second side of the patterning slit sheet; and depositing a deposition material discharged from the deposition source nozzle unit via the plurality of patterning slits between the patterning ribs on which the plurality of heat dissipation units are disposed while at least one of the thin film deposition apparatus or the substrate is moved relative to the other one of the thin film deposition apparatus or the substrate.