Patent ID: 7932177

Claim:
A field-effect transistor comprising: a gate electrode; a source electrode; a drain electrode; a semiconductor film which is disposed in such a way as to contact the source electrode and the drain electrode and which is formed from an organic semiconductor material; a gate insulating film disposed between the gate electrode and the semiconductor film; and a substrate for holding the gate electrode, the source electrode, the drain electrode, the semiconductor film, and the gate insulating; wherein the gate insulating film is provided with a plurality of insulating layers including at least a first insulating layer and a second insulating layer, the first insulating layer being arranged so as to contact the semiconductor film; the first insulating layer is defined by a film of chemical vapor deposited poly-p-xylylene material; the second insulating layer has a dielectric constant higher than that of the first insulating layer; and the second insulating layer includes a resin including a metal oxide powder.