Patent ID: 8362623

Claim:
A semiconductor device, comprising: a first conductive film formed on an insulating substrate; a first interlayer insulating film that covers said first conductive film; a planarizing film layered over said first interlayer insulating film; a first contact hole that passes through said planarizing film; a second interlayer insulating film that covers a surface of said planarizing film and an inner surface of said first contact hole; a third interlayer insulating film layered over said second interlayer insulating film; a second contact hole formed inside said first contact hole with a smaller inner diameter than said first contact hole to pass through said first interlayer insulating film, said second interlayer insulating film, and through said third interlayer insulating film; and a second conductive film formed over said third interlayer insulating film and inside said second contact hole to be electrically connected to said first conductive film.