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Yield Management System (YMS)

A system for managing semiconductor yield.
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Description

A yield management system (YMS) in the context of semiconductor manufacturing is a data management, analysis, and tool system that collects data from the fab, especially during manufacturing ramp ups, and helps engineers find ways to improve yield. YMS helps semiconductor manufacturers and fabs manage high volumes of production analysis with fewer engineers. These systems analyze the yield data and generate reports. IDMs, fabs, fabless semiconductor companies, and OEMs use YMSes.

Recently more data analytics, automation, and easier to grok graphics are being added to these systems. Startups have been active and very productive in this space.

A YMS may include:

  • Yield analysis
  • Excursion analysis
  • Pattern analysis
  • Parametric analysis
  • Drift analysis
  • Gage R&R
  • Calculated Tests/Multivariate analysis
  • Wafer sort analysis
  • Bin analysis
  • WAT/PCM

Examples of YMSes for the semiconductor industry:
YieldHub has a platform YMS.
yieldWerx

Contributing data analytics to YMSes are startups proteanTecs and PDF Solutions.

Synopsys has several tools for yield management: Yield Explorer, Odyssey, SysNav, Yield Manager, Avalon. Some of these tools feed into Synopsys’s Silicon Lifecycle Management system, debuted in 2020.

Cadence has some advanced node yield management tools.Applied Materials has the Applied SmartFactory Yield Management System.


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