Patent ID: 6309958
Filing Date: 2001-10-30
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising:a wiring formation step for forming a wiring pattern having a region in which a plurality of wirings are disposed side by side on a semiconductor substrate;a side-wall insulation film forming step for forming a side-wall insulation film on a side wall of each of said wirings;a trench formation step for forming a trench which has its bottom surface formed at a positon lower than a lower surface of each of said wirings, said trench being disposed between adjacent ones of said wirings; anda void-containing insulation film formation step for forming an insulation film containing a void space portion therein, wherein said insulation film is formed in said trench in a manner such that said void space portion makes its lower surface substantially flush with a lower surface of each of said wirings.