Patent ID: 7218361

Claim:
An electronic equipment comprising: a substrate having an insulating surface; a semiconductor layer formed over the surface, said semiconductor layer having a channel forming region, an LDD region, a source region and a drain region; a gate insulating film formed over said semiconductor layer; a first conductive film formed over said gate insulating film; and a second conductive film formed over said first conductive film, wherein the width of said first conductive film in the longitudinal direction of said channel forming region is larger than that of said second conductive film, wherein said LDD region entirely overlaps with said first conductive film with said gate insulating film interposed therebetween and contacts said source region or said drain region, wherein the gate insulating film has a first region having a first thickness where the gate insulating film is covered by the first conductive film and a second region having a second thickness where the gate insulating film is not covered by the first conductive film, and the second thickness is thinner than the first thickness, and wherein the gate insulating film has a tapered shape in cross section at a portion between the first region and the second region.