Patent ID: 8877639
Filing Date: 2014-11-04
Classification: G03F,H01L

Abstract:
1. A method of creating a half pitch interconnect from a half pitch interconnect layout comprising: generating a half pitched interconnect layout comprising a plurality of shapes in the plane of the interconnect layout, wherein the plurality of shapes include a plurality of shape designations, each shape designation having different shapes and shapes of the same designation are not adjacent in the plane of the interconnect layout; creating a first photo mask containing shapes having two or more of the plurality of shape designations; creating a second photo mask containing shapes having one or more of the plurality of shape designations included in the first photo mask and one or more of the plurality of shape designations not included in the first photo mask, wherein the first and second photo masks are dimensioned so that the first and second photo masks generate a half pitch interconnect corresponding to the half pitch interconnect layout when the first and second photo masks are used in a patterning process.