Patent ID: 8921152

Claim:
A method for manufacturing an organic semiconductor film for forming a channel of an organic thin film transistor by supplying a raw material solution containing an organic semiconductor material and a solvent onto a substrate and drying the raw material solution, thereby forming an organic semiconductor film on the substrate, the method comprising: positioning a contact member having a plurality of contact faces for contacting the raw material solution, such that the contact faces have a certain relationship with a surface of the substrate, and forming a plurality of droplets of the raw material solution on the substrate, thereby establishing a droplet-retaining state, in which each one of the contact faces retains one of the respective droplets through contact between the contact face and the respective droplet; evaporating the solvent in the droplets, so as to form the organic semiconductor films at locations on the surface of the substrate that correspond to the plurality of contact faces, and removing the contact member from the surface of the substrate, after the solvent in the droplets of the raw material solution is evaporated and films containing the organic semiconductor material are formed, wherein the contact member comprises an auxiliary substrate and a plurality of contact protrusions formed on the auxiliary substrate, and each of the contact faces is configured with a portion of faces of the contact protrusions that intersect a surface of the auxiliary substrate; and when the droplet-retaining state is established, the contact member is arranged such that the contact protrusions contact the surface of the substrate from above, and an edge portion of each one of the droplets is in contact with only one of the contact faces.