Patent ID: 6503830
Filing Date: 2003-01-07
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising:a step of forming, in a laminated manner, a first insulating film in which a connection hole is formed and a second insulating film in which a wiring groove communicating with the connection hole is formed; a step of forming mask layers of plural layers on the second insulating film; and a step of forming the connection hole in the first insulating film and forming the wiring groove in the second insulating film while the mask layers of the plural layers are used, wherein the step of forming the mask layers of the plural layers includes: a step of forming a first mask layer, in which a connection hole pattern is formed, of a same material as the first insulating film on the second insulating film; a step of forming a wiring groove pattern in a second mask layer after the second mask layer is formed on the first mask layer; a step of forming a third mask layer of a same material as the first mask layer on the second mask layer including an inner portion of the wiring groove pattern; and a step of forming the connection hole pattern extending through the third mask layer and the first mask layer.