Patent ID: 7361926

Claim:
A field-effect transistor comprising: a gate electrode formed at one side of a base substrate; a source electrode formed at the one side of the base substrate; a drain electrode formed at the one side of the base substrate; an insulation layer formed between the gate electrode and the source electrode and between the gate electrode and the drain electrode; an organic semiconductor layer formed around the source electrode and the drain electrode; and a reformed layer attached between the insulation layer and the organic semiconductor layer and containing a compound having the CN group in a molecule, wherein the compound having the CN group in a molecule contained in or making up the reformed layer is expressed by the following chemical formula: (Chemical formula 1) (in the chemical formula 1, R 1 represents the alkylene group or the polymethylene group whose carbon number k is 1 to 20 and the alkylene group and the polymethylene group may have an ether linkage, n represents an integer of 1 to 2k, R 2 , R 3 , and R 4 each represents an organic group whose carbon number is 1 to 20 independently of each other and at least one of R 2 , R 3 , and R 4 is the alkoxy group whose carbon number is 1 to 5 or the alkylamino group having an alkyl chain whose carbon number is 1 to 20, and M represents at least one kind of atom of Si, Ti, and Al, and when M is Si or T, m=1 and when M is Al, m=0).