Patent ID: 6635515
Filing Date: 2003-10-21
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the process steps of:forming a lower-layer signal line in a lower layer on a semiconductor substrate via a first insulating film; forming a second insulating film with which the lower-layer signal line is covered; forming a first through hole which passes through he second insulating film and reaches the lower-layer signal line; embedding a first conductor in the first through hole; forming one of a main power-supply line and a ma n ground line on the second insulating film, which has a window for providing a space above the first conductor, and forming a conducting portion on the first conductor inside the window, where the conducting portion is isolated from said one of the main power-supply line and the main ground line; forming a third insulating film with which the conducting portion and said one of the main power-supply line and the main ground line are covered; forming a second through hole which passes through the third insulating film and reaches the conducting portion; embedding a second conductor in the second through hole; forming an upper-layer signal line in an upper layer on the second conductor, where the main power-supply line and the main ground line are wider than the upper-layer signal line.