Patent ID: 6593156
Filing Date: 2003-07-15
Classification: G01R

Abstract:
A non-destructive inspection method, comprising:a first step of generating a laser light ranging in wavelength from 300 nm to 1,200 nm, and generating a laser beam converging into a predetermined beam diameter; a second step of predetermined electrical connection means configuring of a predetermined current path for passing an OBIC (Optical Beam Induced Current) current generated by an OBIC phenomenon when the laser beam is radiated onto a p-n junction and vicinity of the p-n junction formed in a semiconductor chip to be inspected at least in a substrate including a wafer state and an installation state during a production process; a third step of scanning a predetermined area of a semiconductor chip while radiating the laser beam; a fourth step of magnetic flux detection means detecting magnetic flux induced by the OBIC current generated by the laser beam at each radiation point scanned in the third step; and a fifth step of determining whether or not there is a resistance increase defect including a disconnection defect or a leak defect including a short circuit defect in the current path including the radiation point of said semiconductor chip based on said magnetic flux detected in the fourth step.