Patent ID: 7595266
Filing Date: 2009-09-29
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor integrated circuit device, comprising steps of: providing a semiconductor substrate, the semiconductor substrate including semiconductor elements and a first insulating film formed over the semiconductor elements: forming a first layer over the first insulating film; forming first masks over the first portions of the first layer; forming a second mask over a second portion of the first layer, wherein the first masks include a different layer from the second mask, wherein the second portion of the first layer is arranged between the first portions of the first layer such that the second mask and the first masks are separately formed with each other; and removing the first layer by using the first masks and the second mask as a mask so as to form a pattern for interconnections, wherein distances between the interconnections are smaller than a resolution limit for exposure light used to from the first masks and the second mask.