Apparatus and method for high-accuracy alignment
AssigneeNational Semiconductor Corporation
InventorMichael E. Thomas
Life of this patent
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AssigneeNational Semiconductor Corporation
InventorMichael E. Thomas
Estimating the term…
A method of alignment of a first object with a second object includes the steps of determining the location of a feature on a surface of the second object using a probe of a scanned probe microscope, and positioning the first object in preselected spatial relationship with respect to the located feature. In an apparatus for performing lithography on a substrate, having a mask and a mask holder supporting the mask, an improvement includes an apparatus having a probe of a scanned probe microscope, for determining the location of a feature on a surface of the substrate. A method of forming a probe of a scanned probe microscope on a substrate includes the steps of providing a conductive base, having a tungsten surface layer, on the substrate, providing a dielectric layer and a high-temperature polymeric layer on the conductive base; opening a hole through the dielectric layer and the organic compound layer to the tungsten surface layer of the base, and selectively depositing tungsten by chemical vapor deposition on the tungsten surface in the hole to form a substantially conical tungsten tip in the hole.
A method for alignment of a first object with a second object, comprising the steps of:
A method for alignment of a first object with a second object, comprising the steps of:
In the apparatus for performing optical lithography on a substrate, having an optical mask and a mask holder supporting the optical mask, the improvement comprising means, comprising a probe of a first scanned probe microscope, for determining the location of a feature on a surface of the substrate, further comprising a probe of a second scanned probe microscope, in known spatial relationship with respect to said probe of said first scanned probe microscope, for determining the location of a feature on said mask.
A method for rotational and translational alignment of a first object with a second object, comprising the steps of:
An apparatus for rotational and translational alignment of a first object with a second object, comprising:
A method for detecting misalignment between a first object and a second object, comprising the steps of:
An apparatus for detecting misalignment between a first object and a second object, comprising:
Dependencies are inferred from the claim text.