Patent ID: 7772622

Claim:
A manufacturing method of a field effect transistor, comprising steps of: providing a patterned gate electrode on a substrate, and a gate insulator is provided on the substrate and the gate electrode; providing a source electrode and a drain electrode spaced apart from each other on the gate insulator; providing a region that is to be a channel between the source electrode and the drain electrode; wherein a first boundary between the region and either one of the source electrode and the drain electrode is linear, a second boundary between the region and either one of the source electrode and the drain electrode is non-linear, the second boundary is continuous or discontinuous, and the boundary part has a plurality of recess parts, the surface of the region has higher hydrophilicity than other regions, and the periphery of the region is provided with a member having higher water-repellency than the region; and supplying a solution including semiconductor organic molecules to the region, and drying the solution.