Manufacturing method of organic light emitting display device

A method of manufacturing an organic light emitting display device, the method comprising:

• forming a thin film transistor on each sub-pixel region which is defined in a substrate;
• forming a passivation layer on the substrate with the thin film transistor formed thereon;
• forming a first electrode of an organic light emitting diode in each sub-pixel region of the passivation layer;
• forming a bank pattern in boundaries of the sub-pixel region of the passivation layer;
• forming a photoresist pattern, which exposes a first sub-pixel region, on the bank pattern;
• forming an organic light emission layer on the first electrode within the first sub-pixel region and an organic material layer on the photoresist pattern by depositing an organic material on the entire surface of the substrate with the photoresist pattern;
• and
• removing the photoresist pattern and the organic material pattern using a detachment film,
• wherein the detachment film includes polymer clay and is disposed on the organic material pattern and formed to encompass side surfaces of the organic material pattern and the photoresist pattern.