Provided are a method of manufacturing an organic thin film transistor
(TFT), the organic TFT manufactured using the method, and a flat panel
display device comprising the organic TFT. The method includes: coating a
lubricant on a predetermined region of a substrate where an organic
semiconductor layer is not to be formed; coating an organic semiconductor
layer on the entire substrate; heating the coated substrate to melt the
lubricant; and releasing the organic semiconductor layer formed above the
predetermined region from the substrate. According to the method, the
organic semiconductor layer can be effectively patterned without damaging
the substrate and the organic semiconductor material.