Patent ID: 7923529

Claim:
An organic thin film transistor comprising a substrate, a gate electrode, a gate insulating film, an organic active layer and source-drain electrodes wherein the organic active layer is made of the oligothiophene-arylene derivative according to an oligothiophene-arylene derivative of Formula 1: wherein Ar is a C 2-30 heteroarylene interrupted by at least one nitrogen atom which may be substituted with hydrogen, hydroxyl, amino, a C 1-20 linear, branched or cyclic alkyl, C 1-20 alkoxyalkyl, alkylamino, ester or amido, or C 1-16 linear, branched or cyclic alkoxy, alkylamino, ester or amido; Ar 1 is a C 2-30 aryl group which may be interrupted by at least one heteroatom and may be substituted with C 1-20 linear, branched or cyclic alkyl, Ar 2 is a C 5-30 aryl group which may be interrupted by at least one heteroatom and may be substituted with hydrogen, hydroxyl, amino, C 1-20 linear, branched or cyclic alkyl, C 1-20 alkoxyalkyl, alkylamino, ester or amido, or C 1-16 linear, branched or cyclic alkoxy, alkylamino, ester or amido; the substituents R 1 are each independently hydrogen, hydroxyl, amino, C 1-20 linear, branched or cyclic alkyl, C 1-20 alkoxyalkyl, alkylamino, ester, amido, or a C 1-16 linear, branched or cyclic alkoxy, alkylamino, ester or amido; n 1 is 1; n 2 is an integer between 2 and 8; and n 3 is an integer between 0 and 6.