Patent · US Expired

Method and apparatus for multivariate fault detection and classification

US7248939B1 · kind B1 · utility

12Cited by
1References
23Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 13, 2005
Grant dateJul 24, 2007
Priority date
Expiry dateSep 4, 2025

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01L21/67276
  • WIPO fieldSemiconductors
  • WIPO sectorElectrical engineering

Abstract

The present invention provides a method and apparatus for multivariate fault identification and classification. The method includes accessing data indicative of a plurality of physical parameters associated with a plurality of processed semiconductor wafers and providing at least one summary report including information indicative of at least one univariate representation of the accessed data and at least one multivariate representation of the accessed data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.