Patent ID: 7842608
Filing Date: 2010-11-30
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: forming a first conductive layer on a first insulating film; forming a second insulating film so as to cover said first conductive layer; forming a resist mask on said second insulating film; forming a hole reaching said first conductive layer in said second insulating film by means of first dry etching using said resist mask; removing said resist mask; removing said first conductive layer exposed at the bottom of said hole by means of second dry etching, so that said hole reaches said first insulating film and said first conductive layer exposes at a side surface within said hole; forming a conductive plug in contact with said first conductive layer exposed at the side surface within said hole by burying a conductive material in said hole; and forming a second conductive layer to be connected to said conductive plug on said second insulating film.