Patent ID: 6890815

Claim:
A method of manufacturing a borderless contact, the method comprising: providing a workpiece, the workpiece having at least one component region and a first insulating layer formed over the at least one component region; depositing a first conductive material over the workpiece; depositing a first etch selectivity material over the first conductive material; depositing a second etch selectivity material over the first etch selectivity material; etching the second etch selectivity material, the first etch selectivity material and the first conductive material to form a plurality of first conductive lines, the second etch selectivity material, first etch selectivity material and first conductive lines comprising sidewalls, the second etch selectivity material comprising a top surface; forming sidewall spacers on the sidewalls of the second etch selectivity material, first etch selectivity material and first conductive lines; depositing a liner over exposed portions of the workpiece, the sidewall spacers and the second etch selectivity material top surface; depositing a second insulating layer over the liner to a height greater than the top surface of the second etch selectivity material; patterning the second insulating layer with a pattern for a plurality of second conductive lines, the second conductive lines being positioned in a different direction than the first conductive lines; removing the liner from at least over the component region; removing the first insulating layer from over the component region; and depositing a second conductive material over the second insulating layer to fill the pattern for the plurality of second conductive lines, forming a plurality of second conductive lines and a borderless contact beneath at least one second conductive line abutting the at least one component region.