Patent ID: 7560301

Claim:
A method of manufacturing a field effect transistor including an organic semiconductor layer and an organic insulating layer that adjoins the organic semiconductor layer, the method comprising the steps of: (i) applying a coating liquid including a solvent as well as first and second organic molecules that have been dissolved in the solvent; and (ii) forming a first layer and a second layer by removing the solvent contained in the coating liquid that has been applied, the first layer containing the first organic molecule as its main component, and the second layer adjoining the first layer and containing the second organic molecule as its main component, wherein the first organic molecule is a semiconductor material or a precursor of a semiconductor material, the second organic molecule is an insulator material or a precursor of an insulator material, the first organic molecule and the second organic molecule are not compatible with each other, and one of the first organic molecule and the second organic molecule comprises at least one group selected from a hydrocarbon group and a fluorocarbon group, while the other comprises at least one polar group.