Patent ID: 7897430

Claim:
A method of fabricating, an organic thin film transistor, the transistor comprising a substrate, a gate electrode layer formed on said substrate, a photocurable transparent inorganic/polymer composite layer including metal oxide nanoparticles formed on said substrate and gate electrode, an organic activation layer formed on said composite layer and a source-drain electrode layer formed on said activation layer, wherein the photocurable transparent inorganic/polymer composite layer including metal oxide nanoparticles is prepared to exhibit dielectric properties by mixing a metal oxide precursor and a photocurable transparent polymer, coating the mixture on the substrate and gate electrode to form an organic film, and converting a part of the organic film into nano-inorganic particles through sol-gel and photocuring reactions, the method comprising the following steps: 1) forming a gate electrode on a substrate; 2) forming a photocurable transparent inorganic/polymer composite layer including metal oxide nanoparticles on said substrate and said gate electrode; 3) forming an organic activation layer on said photocurable transparent inorganic/polymer composite layer; and 4) forming a source-drain electrode layer on said organic activation layer, wherein step 2) is carried out by mixing a metal oxide precursor, a reaction regulator, a catalyst and a photocurable polymer, coating the mixture on the substrate and gate electrode, and performing sol-gel and photocuring reactions.