Patent ID: 6340844
Filing Date: 2002-01-22
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor substrate; an interlayer insulation film formed on the semiconductor substrate; a first conductor line formed at a relatively lower position within an interlayer dielectric film laid; a second conductor line formed at a relatively higher position within the interlayer dielectric film; an etching stopper film which is formed within the interlayer dielectric film at an intermediate position between the first and second conductor lines, said etching stopper film having an etch selectivity differing from that of the interlayer dielectric film for a predetermined etching condition, and a contact conductor filled in a contact hole, said contact hole being formed in the interlayer dielectric film so as to extend from the surface of the interlayer dielectric film to reach the second conducting line, the offset portion of the contact hole from the second conducting line is extending toward the etching stopper, and terminating at longest at the etching stopper film.