Organic layer deposition apparatus and method of manufacturing organic light-emitting display device by using the organic layer deposition apparatus

A method of manufacturing an organic light-emitting display device by using an organic layer deposition apparatus for forming an organic layer on a substrate, the method comprising:

• fixing the substrate to a transfer unit by using a loading unit;
• transporting, into a chamber, the transfer unit onto which the substrate is fixed, by using a first conveyer unit passing through the chamber;
• measuring position information of the substrate before the organic layer is formed on the substrate;
• forming the organic layer by depositing a deposition material discharged from an organic layer deposition assembly, onto the substrate while the substrate is moved relative to the organic layer deposition assembly, wherein the organic layer deposition assembly in the chamber is spaced apart from the substrate;
• separating the substrate, onto which the forming of the organic layer has been completed, from the transfer unit by using an unloading unit;
• and
• transporting the transfer unit, from which the substrate has been separated, to the loading unit by using a second conveyer unit passing through the chamber.