Patent ID: 7128946
Filing Date: 2006-10-31
Classification: H01L,Y10T

Abstract:
1. A method of forming metal wires, comprising the steps of: a) forming a low-dielectric insulating film on a silicon substrate for which given processes are implemented, and then forming a trench in the low-dielectric insulating film; b) forming lower metal wires within the trench; c) adhering a plate in which a plurality of implantation holes are formed and a sidewall of a given height is formed at its edge, an engraved pattern for forming a plurality of trenches formed on the plate, and an engraved pattern for forming a plurality of via holes formed on the engraved pattern for forming the trench, onto a silicon substrate; d) injecting a low-dielectric insulating material of a liquid state or a sol or gel state completely into a space through the implantation holes and then annealing the low-dielectric insulating material; e) removing the plate to obtain a low-dielectric insulating film pattern having the plurality of the trenches shaped by the engraved pattern for forming the trenches and the plurality of the via holes shaped by the engraved pattern for forming the via holes; and f) forming upper metal wires, which are connected to the lower metal wires through the via holes, within the trenches.