Substrate alignment
First Claim
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1. A method of patterning a substrate having an inner edge and inner diameter that is positionable about a shaft having an outer diameter and an axis of rotation, the method comprising:
- providing a template with a patterning surface having concentrically arrayed features, the template in superimposition with the substrate;
determining the location of a first point on the inner edge of the substrate relative to the template;
determining a radius difference based on the difference between the diameter of the shaft and the inner diameter of the substrate;
biasing the substrate such that the first point of the substrate is translated relative to the template by the radius difference; and
imprinting a patterned layer on the substrate with the template, wherein features of the patterned layer are imprinted such that they are concentric to the axis of rotation of the shaft when the outer diameter of the shaft is contacted with the first point of the substrate.
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Abstract
Systems and methods for imprinting a patterned layer on a substrate are described. Features of patterned layer may be concentrically imprinted in relation to a shaft positioned on a substrate chuck. The substrate may be biased using a radius difference between a diameter of the shaft and an inner diameter of the substrate in relation to a point on an inner edge of the substrate.
60 Citations
17 Claims
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1. A method of patterning a substrate having an inner edge and inner diameter that is positionable about a shaft having an outer diameter and an axis of rotation, the method comprising:
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providing a template with a patterning surface having concentrically arrayed features, the template in superimposition with the substrate; determining the location of a first point on the inner edge of the substrate relative to the template; determining a radius difference based on the difference between the diameter of the shaft and the inner diameter of the substrate; biasing the substrate such that the first point of the substrate is translated relative to the template by the radius difference; and imprinting a patterned layer on the substrate with the template, wherein features of the patterned layer are imprinted such that they are concentric to the axis of rotation of the shaft when the outer diameter of the shaft is contacted with the first point of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification