Patent ID: 6780708
Filing Date: 2004-08-24
Classification: H01L

Abstract:
A method of forming a layer comprising a line and space pattern over a substrate including a first region and a second region, the method comprising the steps of:depositing and patterning a hard mask layer over the layer to form a second line and space pattern therein, wherein the second line and space pattern includes at least one line and at least one space of a minimum dimension dictated by a resolution limit of lithography; depositing a conformal hard mask layer over the hard mask layer, etching the conformal hard mask layer to form sidewall spacers on sidewalls of at least one line in the hard mask layer in the first region, whereby the minimum dimension of the at least one space in the hard mask layer in the first region is reduced to a lateral dimension less than achievable by the resolution limit of lithography; and etching the layer to form the line and space pattern therein corresponding to a master line and space pattern in the hard mask layer in the first region and the second region, a space in the first region includes the lateral dimension less than achievable by the resolution limit of lithography and a line in the second region includes a lateral dimension achievable by lithography.