Contactless Testing for Chip Verification

A brief description is given on the state of the art of three contactless testing techniques: Electron-beam testing, laser-beam testing and emission microscopy. First, reasons are given why contactless testing is still important for chip verification and failure analysis. Second, a scenario of contactless testing describes the influences of chip, package and CAD/CAT environment. Finally requirements for contactless testing as well as design for e-beam testability are discussed.