Patent ID: 7799597

Claim:
A method of manufacturing a thin film transistor, the method comprising: forming a gate electrode; forming an insulating layer; forming source and drain electrodes; forming a hydrophobic layer; forming an opening in the hydrophobic layer to define a region corresponding to an organic semiconductor layer to be formed, wherein the opening exposes a portion of the source and drain electrodes and a portion of the insulating layer between the source and drain electrodes; forming a hydrophilic layer in the region of the hydrophobic layer defined by the opening by depositing a hydrophilic layer forming material in the region such that the hydrophilic layer covers the exposed portion of the source and drain electrodes and the exposed portion of the insulating layer between the source and drain electrodes; and forming the organic semiconductor layer on the hydrophilic layer, wherein the organic semiconductor layer is formed of an organic semiconductor material that has a property of being attracted to the hydrophilic layer and repelled by the hydrophobic layer such that a patterned layer of organic semiconductor material is formed only on the hydrophilic layer and such that the formed organic semiconductor layer overlaps the portions of the source and drain electrodes and the portion of the insulating layer between the source and drain electrodes that were exposed by the opening and were covered by the hydrophilic layer.