Ryan, Mason & Lewis, LLP
Methods and structures for cutting lines or spaces in a tight pitch structure
A method for manufacturing a semiconductor device includes forming a hardmask layer on a substrate, forming a plurality of spacers on the hardmask layer, wherein the plurality of spacers comprise a first set of spacers and a second set of spacers, reducing a height of each spacer of the second set of spacers to be less than a height of each spacer of the first set of spacers, removing one or more spacers from at least one of the first set of spacers and the second set of spacers, transferring a pattern of remaining spacers to the hardmask layer to form a plurality of patterned hardmask portions, and transferring a pattern of the plurality of patterned hardmask portions to the substrate to form one of a plurality of patterned substrate portions and a plurality of openings in the substrate.
International Business Machines Corporation
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H01L H01L H01L
inventional inventional inventional
Peng Kangguo Choonghyun Juntao
Xu Cheng Lee Li