Patent ID: 7773166

Claim:
A method of manufacturing an organic thin film transistor (OTFT), the method comprising: forming an oxide layer on a base substrate; forming source and drain electrodes on the oxide layer, wherein the source electrode is spaced apart from the drain electrode and exposing a portion of the oxide layer; forming a organic layer pattern having an opening on the base substrate, the opening exposing portions of the source and drain electrodes and the portion of the oxide layer; treating the exposed portions of the source and drain electrodes and the potion of the oxide layer by an O 2 plasma to form a hydrophilic source electrode portion in the source electrode and a hydrophilic drain electrode portion in the drain electrode; forming a hydrophilic organic semiconductor pattern electrically connected to hydrophilic source electrode portion and the hydrophilic drain electrode portion through the opening; forming a gate insulating layer covering the hydrophilic organic semiconductor pattern; and forming a gate electrode on a predetermined portion of the gate insulating layer corresponding to the organic semiconductor pattern.