OPTICAL PROXIMITY CORRECTION METHOD AND PHOTOMASK FABRICATION METHOD USING THE SAME
A photomask fabrication method comprising performing an optical proximity correction (OPC) on a design pattern to generate a correction pattern, and manufacturing the photomask having the correction pattern. The step of performing the OPC includes dividing the design pattern into a plurality of segm...
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Main Authors | , , , , , |
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Format | Patent |
Language | English |
Published |
30.05.2024
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Subjects | |
Online Access | Get full text |
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Summary: | A photomask fabrication method comprising performing an optical proximity correction (OPC) on a design pattern to generate a correction pattern, and manufacturing the photomask having the correction pattern. The step of performing the OPC includes dividing the design pattern into a plurality of segments, producing a hash value for each of the plurality of segments, and generating the correction pattern by applying a first correction bias to ones of the plurality of segments having a same hash value, wherein at least two of the plurality of segments have the same hash value. The step of producing the hash value includes generating a key segment in a target segment, creating a query region around the key segment, and producing the hash value for the target segment based on a pattern image in the query region. |
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Bibliography: | Application Number: US202318330729 |