Method to arrange features on a substrate to replicate features having minimal dimensional variability
First Claim
1. A method of arranging features, on a substrate having topological variations, to replicate features having minimal dimensional variability, said method comprising:
- forming a volume of flowable material on a region of said substrate, said region having an area associated therewith;
forming, from said volume of flowable material, a plurality of features on said region; and
transferring said plurality of features into said substrate, defining transferred features, with said area of said region being established to maximize a planarity of said region in a first direction to minimize dimensional variations among a subset of said transferred features in a second direction orthogonal to said first direction.
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Abstract
The present invention is directed to a method of and a mold for arranging features on a substrate to replicate the features with minimal dimensional variability. The method includes arranging features on a layer to minimize thickness variations in the layer that are attributable to density variations of the plurality of features on the layer. The features are transferred into an underlying substrate. It is believed that by forming the features so as to define a uniform fill factor in the layer, the thickness variations may be reduced, if not abrogated. To that end, one method in accordance with the present invention includes forming a flowable material on the substrate. Thereafter, a plurality of features is formed in a region of the flowable material. The plurality of features are arranged to provide a substantially uniform fill factor in the region.
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Citations
14 Claims
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1. A method of arranging features, on a substrate having topological variations, to replicate features having minimal dimensional variability, said method comprising:
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forming a volume of flowable material on a region of said substrate, said region having an area associated therewith; forming, from said volume of flowable material, a plurality of features on said region; and transferring said plurality of features into said substrate, defining transferred features, with said area of said region being established to maximize a planarity of said region in a first direction to minimize dimensional variations among a subset of said transferred features in a second direction orthogonal to said first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12, 13, 14)
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9. A method of arranging features on a substrate to replicate features having minimal dimensional variability, said method comprising:
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forming a volume of flowable material on a region of said substrate, said region having an area associated therewith; forming, from said volume of said flowable material, a plurality of features on said region, said plurality of features comprising first and second subsets having first and second thicknesses, with a magnitude of said volume of said flowable material being defined by said area, said first and second thicknesses, and a fill factor associated with one of said first and second subsets; and transferring said plurality of features into said substrate, defining transferred features, with said area of said region being established to maximize a planarity of said region to minimize dimensional variations among a subset of said transferred features. - View Dependent Claims (10, 11)
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Specification