Acoustic Reflection Coefficient Analysis in Mold Compound Interfaces
Acoustic reflection coefficient analysis identifies sub-micron mold compound delaminations by detecting 180-degree phase inversions in ultrasonic signals.
Acoustic Phase Inversion Analysis for Microvia Interfacial Delamination Detection
Acoustic phase inversion analysis detects microvia interfacial delamination by identifying 180-degree echo polarity flips at lower impedance void boundaries.