Patent ID: 7952100
Filing Date: 2011-05-31
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor film including a channel formation region, a first impurity region and a second impurity region, which is provided over a substrate; a first conductive film provided over the channel formation region with a gate insulating film interposed therebetween; a first interlayer insulating film provided to cover the first conductive film; a second conductive film provided over the first interlayer insulating film to overlap with at least part of the first impurity region; a second interlayer insulating film provided over the second conductive film; a third conductive film provided over the second interlayer insulating film; and a fourth conductive film provided over the second interlayer insulating film, wherein the third conductive film is electrically connected to the first impurity region through a first opening formed in the first interlayer insulating film and the second interlayer insulating film, wherein the fourth conductive film is electrically connected to the second impurity region through a second opening formed in the first interlayer insulating film and the second interlayer insulating film.