Characterization and verification for integrated circuit designs

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United States of America Patent

PATENT NO 7712056
APP PUB NO 20070157139A1
SERIAL NO

11703399

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Variations are characterized in feature dimensions of an integrated circuit that is to be fabricated in accordance with a design by a process that produces topographical variation in the integrated circuit, the variations in feature dimension being caused by the topographical variations. The process includes lithography or etch. Predicted characteristics are verified to conform to the design, the characteristics including feature dimensions or electrical characteristics. A process is selected for use in fabricating the integrated circuit based on the relative predicted variations. Chip-level features of a design of an integrated circuit are verified for manufacture within focus limitations of a lithographic tool. Whether a design of a level of an integrated circuit can be lithographically imaged in accordance with the design is predicted, and if it cannot be, the design or processing parameters are adjusted so that it can be.

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Patent Owner(s)

  • CADENCE DESIGN SYSTEMS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Smith, Taber H San Jose, US 24 4049
White, David Cambridge, US 205 6959

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