Patent ID: 7692223

Claim:
A semiconductor device comprising: an island-shaped semiconductor film formed over a substrate, including: a source region, a drain region, a channel forming region between the source region and the drain region, and impurity regions having a conductivity type different from that of the source region and the drain region; a first insulating film in contact with a top face of the island-shaped semiconductor film; a second insulating film in contact with a side face of the island-shaped semiconductor film; a first conductive film in contact with top face of the first insulating film; and a second conductive film in contact with a top surface of the first conductive film and a top surface of the second insulating film, wherein a part of an end portion of the island-shaped semiconductor film is coextensive with a part of an end portion of the first conductive film, and wherein the impurity regions are provided at end portions of the island-shaped semiconductor film and adjacent with the channel forming region, the source region and the drain region.