摘要:
The technology disclosed relates to methods and devices that compensate for displacements in a pattern or deformations of workpiece. In particular, that relates to using timing to compensate for displacements along a first axis along the scanning direction while using resampling, interpolation or a similar method to compensate for displacements along a second axis that is substantially orthogonal to the first axis. The scanning direction may be an actual direction of movement of the scanning head or it may be a direction perpendicular to an orientation of an image projected onto a workpiece.
摘要:
The technology disclosed relates to variable tapers to resolve varying overlaps between adjacent strips that are lithographically printed. Technology disclosed combines an aperture taper function with the variable overlap taper function to transform data and compensate for varying overlaps. The variable taper function varies according to overlap variation, including variation resulting from workpiece distortions, rotor arm position, or which rotor arm printed the last stripe. Particular aspects of the present invention are described in the claims, specification and drawings.
摘要:
Methods and apparatuses for patterning workpieces are provided. The methods and apparatuses described herein improve overlay between subsequently patterned layers on a workpiece by introducing an improved alignment method that compensates for workpiece distortions.
摘要:
A novel silicon micromirror structure for improving image fidelity in laser pattern generators is presented. In some embodiments, the micromirror is formed from monocrystalline silicon. Analytical- and finite element analysis of the structure as well as an outline of a fabrication scheme to realize the structure are given. The spring constant of the micromirror structure can be designed independently of the stiffness of the mirror-surface. This makes it possible to design a mirror with very good planarity, resistance to sagging during actuation, and it reduces influence from stress in reflectivity-increasing multilayer coatings.
摘要:
The present invention relates to a method to determine a position of at least one mark provided on a substrate, comprising the actions of: detecting a first mark on said substrate by using a first detector, detecting a first set of marks comprising at least a second mark on said substrate by using a second detector, computing a first list of relative distance(s) between said first mark and mark(s) in said first set of marks, detecting the second mark on said substrate by using one of said first or said second detectors, detecting a second set of marks comprising at least said first mark on said substrate by using an available detector, computing a second list of relative distance(s) between said second mark and mark(s) in said second set of marks, determining the position of at least one mark by using the information in said first and said second lists of relative distance(s).
摘要:
In a method for measuring lithographic features on a surface with an optical system, a laser beam is scanned over lithographic features on the surface and the laser beam is reflected or transmitted. An image of the lithographic features is formed by the reflected or transmitted laser beam. The image is filtered using a filter, which is an inverse convolution based on a kernel representing the optical system. The filtering provides a threshold that is equal for all line widths and provides the same relative difference from the nominal critical dimension for all line widths. The surface is a wafer or a work piece.
摘要:
A method, apparatus for and a device manufactured by the same, for printing a microlithographic pattern with high fidelity and resolution using simultaneously optimized illuminator and pupil filters having semi-continuous transmission profiles. The optimization can be further improved if the illuminator and pupil filters are polarization selective. The optimization method becomes a linear programming problem and uses a set of relevant features in the merit function. With a suitably chosen merit function and a representative feature set both neutral printing without long-range proximity effects and good resolution of small features can be achieved. With only short-range proximity effects OPC correction is simple and can be done in real time using a perturbation method.
摘要:
A pattern generator may include an electromagnetic radiation source and an optical system. The electromagnetic radiation source may emit electromagnetic radiation to create a pattern on a workpiece. The optical system may include an optical path for the electromagnetic radiation emitted from the electromagnetic radiation source and may be configured such that an apodization of the electromagnetic radiation is sufficient to optimize a critical dimension linearity for the created pattern.
摘要:
An aspect of the present invention includes a method for patterning a workpiece covered at least partly with a layer sensitive to electromagnetic radiation by using a plurality of exposure beams having a predetermined separation in at least a first direction for exposing a pattern onto said workpiece, where said predetermined separation is fixed to an initial system pitch in said first direction, comprising the actions of: scaling a pattern pitch in said first direction to be an integer multiple of said system pitch, adjusting the initial system pitch in said first direction to be an adjusted system pitch to maintain a scale of said pattern, adjusting said predetermined separation of exposure beams to said adjusted system pitch. Other aspects of the present invention are reflected in the detailed description, figures and claims.
摘要:
An apparatus for patterning a work piece including a source, and at least one reflective tilting surface adapted to induce a phase difference using at least one of a phase shifting plate and a difference in step height. A method corresponding to the apparatus for patterning a work piece. A method of manufacturing the apparatus for patterning a work piece and a Spatial Light Modulator, which may be included therein.