Patent ID: 6881614
Filing Date: 2005-04-19
Classification: H01L

Abstract:
1. The creation of a butt contact opening for high-density memory cells, comprising: providing a substrate, the substrate having been provided over an active surface area thereof with: (i) at least one patterned and etched layer of gate material forming a gate electrode adjacent to which a butt contact opening is to be created; (ii) LDD impurity implants self-aligned with the at least one patterned and etched layer of gate material; and (iii) A first and second gate spacer over sidewalls of the at least one patterned and etched layer of gate material, the second gate spacer overlying a sidewall of the at least one patterned and etched layer of gate material adjacent to which the butt contact opening is to be created; depositing an etch blocking mask comprising etch blocking material over the substrate, including the at least one patterned and etched layer of gate material, exposing the second gate spacer; etching the second gate spacer in accordance with the etch blocking mask; removing the etch blocking mask; performing S/D implant into the active surface of the substrate over which a butt contact opening is to be created; and complete processing of the substrate for the creation of the high-density memory cell.