US Patent Application 18337021. METHOD, SYSTEM AND NON-TRANSITORY COMPUTER-READABLE MEDIUM FOR REDUCING WORK-IN-PROCESS simplified abstract

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METHOD, SYSTEM AND NON-TRANSITORY COMPUTER-READABLE MEDIUM FOR REDUCING WORK-IN-PROCESS

Organization Name

Taiwan Semiconductor Manufacturing Company, Ltd.


Inventor(s)

Po-Yi Wang of Tainan City (TW)

Chao-Ming Cheng of Pingtung County (TW)

METHOD, SYSTEM AND NON-TRANSITORY COMPUTER-READABLE MEDIUM FOR REDUCING WORK-IN-PROCESS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18337021 titled 'METHOD, SYSTEM AND NON-TRANSITORY COMPUTER-READABLE MEDIUM FOR REDUCING WORK-IN-PROCESS

Simplified Explanation

The patent application describes a method for improving the cycle time of a product manufacturing process.

  • Collecting process profile data from multiple tool groups running the process
  • Calculating key-performance-indicators (KPIs) for each tool group, including the standard deviation of output from a bottleneck tool group
  • Using a neural network model to analyze the KPI values and work-in-progress (WIP) of each tool group
  • Determining the impact of each KPI on the WIP for each tool group
  • Selecting a set of major KPIs for each tool group based on their impact
  • Controlling the tool groups based on the major KPIs to reduce the total WIP.


Original Abstract Submitted

A method for improving a cycle time of a process of a product is provided. The method includes: collecting process profile data from a plurality of tool groups running the process, and calculating values of a plurality of key-performance-indicators (KPIs) of each tool group including calculating a standard deviation of an output of a stage of a bottleneck tool group of the tool groups; feeding the values of the KPIs and a work-in-progress (WIP) of each tool group into a neural network model in order to output an impact on the WIP for each KPI of each tool group by the neural network model; selecting a set of major KPIs of each tool group from the KPIs according to the impact of each tool group; and controlling the tool groups according to the impact of the set of major KPIs of each tool group in order to reduce a total WIP.

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