Patent ID: 7851787

Claim:
An organic thin film transistor comprising: a buffer layer on a substrate; source and drain electrodes on the buffer layer, wherein each of the source and drain electrodes is formed in an island shape; a tunneling barrier layer on the source and drain electrodes; an organic semiconductor layer on the tunneling barrier layer; a gate insulation layer on the organic semiconductor layer; and a gate electrode overlapping both edges of the source and drain electrodes, and formed on the gate insulation layer, wherein the tunneling barrier layer under the organic semiconductor layer is formed between the source and drain electrodes and the gate electrode, wherein the tunneling barrier layer is formed between the source electrode and the organic semiconductor layer, between the drain electrode and the organic semiconductor layer and between the buffer layer and the organic semiconductor layer, and wherein the tunneling barrier layer is formed of one of CBP(4,4′-N,N′-dicarbazole-biphenyl), BCP(2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline) and SiNx.