Patent ID: 7202153
Filing Date: 2007-04-10
Classification: H01L

Abstract:
1. A method for forming an interconnect network comprising: covering a substrate with a stacking of a first insulating layer, of a first photosensitive layer, and of a second insulating layer; forming openings in the stacking; filling the openings in the stacking with a conductive material to form contacts; covering the second insulating layer and the contacts with a second photosensitive layer; insolating, with an electron beam crossing the second insulating layer, several pairs of portions of the photosensitive layers or their complements according to whether the photosensitive layers are positive or negative, each pair comprising a first portion of the first photosensitive layer and a second portion of the second photosensitive layer, first and second portions of each pair being superposed; removing said pairs of portions of the photosensitive layers; and filling with a conductive material the space previously taken up by the second portions of each of the pairs located above the second insulating layer.