摘要:
Methods include inputting an array of pixels, where each pixel in the array of pixels has a pixel dose. The array of pixels represents dosage on a surface to be exposed with a plurality of patterns, each pattern of the plurality of patterns having an edge. A target bias is input. An edge of a pattern in the plurality of patterns is identified. For each pixel which is in a neighborhood of the identified edge, a calculated pixel dose is calculated such that the identified edge is relocated by the target bias. The array of pixels with the calculated pixel doses is output. Systems for performing the methods are also disclosed.
摘要:
In a method for fracturing or mask data preparation or mask process correction for charged particle beam lithography, a plurality of shots are determined that will form a pattern on a surface, where shots are determined so as to reduce sensitivity of the resulting pattern to changes in beam blur (ß f ). At least some shots in the plurality of shots overlap other shots. In some embodiments, ß f is reduced by controlling the amount of shot overlap in the plurality of shots, either during initial shot determination, or in a post-processing step. The reduced sensitivity to ß f expands the process window for the charged particle beam lithography process.
摘要:
A method and system for manufacturing a surface having a multiplicity of slightly different patterns is disclosed. The method comprises using a stencil mask having a set of characters for forming the patterns on the surface and reducing shot count or total write time by use of a character varying technique. Application of such a method to fracturing, mask data preparation, or proximity effect correct is also disclosed. A method for optical proximity correction of a design of a pattern on a surface is also disclosed, comprising inputting desired patterns for the substrate and inputting a set of characters, some of which are complex characters, that may be used to form the pattern on the surface. A method of creating glyphs is also disclosed.
摘要:
Methods include inputting an array of pixels, where each pixel in the array of pixels has a pixel dose. The array of pixels represents dosage on a surface to be exposed with a plurality of patterns, each pattern of the plurality of patterns having an edge. A target bias is input. An edge of a pattern in the plurality of patterns is identified. For each pixel which is in a neighborhood of the identified edge, a calculated pixel dose is calculated such that the identified edge is relocated by the target bias. The array of pixels with the calculated pixel doses is output. Systems for performing the methods are also disclosed.
摘要:
In the field of semiconductor production using shaped charged particle beam lithography, a method and system for fracturing or mask data preparation or proximity effect correction is disclosed, wherein a series of curvilinear character projection shots are determined for a charged particle beam writer system, such that the set of shots can form a continuous track, possibly of varying width, on a surface. A method for forming a continuous track on a surface using a series of curvilinear character projection shots is also disclosed. Methods for manufacturing a reticle and for manufacturing a substrate such as a silicon wafer by forming a continuous track on a surface using a series of curvilinear character projection shots is also disclosed.
摘要:
A method for particle beam lithography, such as electron beam (EB) lithography, includes predefining a stencil design having a plurality of cell patterns with information from a cell library, fabricating the stencil design, synthesizing a functional description into a logic circuit design after predefining the stencil design so that one or more characteristics of the stencil design are considered during synthesizing of the functional description into the logic circuit design, optimizing the logic circuit design, generating a layout design from the optimized logic circuit design, and forming the logic circuit on a substrate according to the stencil design and the layout design.