Patent ID: 6541314
Filing Date: 2003-04-01
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:(a) forming at least a desired element in a device forming region of a conductive semiconductor substrate on a chip in which said semiconductor substrate is formed on a conductive support substrate through a first insulating film; (b) forming a substrate contact region where said semiconductor substrate is not present, and forming trenches, wherein said trenches pass through said semiconductor substrate to said first insulating film; (c) forming a second insulating film on said semiconductor substrate to fill said trenches and to cover a side wall of said substrate contact region; (d) forming element contact holes for said element to pass through said second insulating film; (e) forming a contact hole section in said substrate contact region to pass through said first and second insulating films to said support substrate; (f) filling said element contact holes with first conductive material; (g) filling said contact hole section with second conductive material; (h) forming a conductive film connected to said contact hole section; and (i) forming an external connection electrode connected to said conductive film.