Patent

Fab management with dynamic sampling plans, optimized wafer measurement paths and optimized wafer transport, using quantum computing

KLA CORPORATION

US 11,615,974 B2GrantedGranted Mar 28, 2023Filed Jul 5, 2019

Systems and methods of optimizing wafer transport and metrology measurements in a fab are provided. Methods comprise deriving and updating dynamic sampling plans that provide wafer-specific measurement sites and conditions, deriving optimized wafer measurement paths for metrology measurements of the wafers that correspond to the dynamic sampling plan, managing FOUP (Front Opening Unified Pod) transport through the fab, transporting wafers to measurement tools while providing the dynamic sampling plans and the wafer measurement paths to the respective measurement tools before or as the FOUPs with the respective wafers are transported thereto, and carrying out metrology and/or inspection measurements of the respective wafers by the respective measurement tools according to the derived wafer measurement paths. Quantum computing resources may be used to solve the corresponding specific…

Claims
30
3 independent claims
Filing to grant
3.7 years
Pendency
CPC classes
15
G01N · G03F · G05B

1ClaimsFirst of 30

  1. 1

    A system for optimizing wafer transport and metrology measurements in a semiconductor fabrication plant (fab), the system comprising: at least one processor configured to: derive and update dynamic sampling plans that provide wafer-specific measurement sites and conditions, wherein the dynamic sampling plans differ between wafers, derive optimized wafer measurement paths for metrology measurements of the wafers that correspond to the respective derived and updated dynamic sampling plan, and…

2Description

1. Technical Field

The present invention relates to the field of semiconductors production, and more particularly, to optimization of production and metrology processes using quantum computing.

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