Patent ID: 9239357
Filing Date: 2016-01-19
CPC Classification: G01R

Claim Text:
1. A laser probing system for testing an integrated circuit microchip having silicon substrate and plurality of semiconductor devices formed therein, comprising: a microchip holder configured for supporting the microchip and enabling application of test signals to the microchip; a laser source providing a laser beam; beam optics configured for receiving said laser beam and, while the test signals are applied to the microchip, focusing said laser beam onto a selected area of the microchip that includes at least one semiconductor device; a photosensor receiving modulated beam reflected from said selected area after being modulated by the semiconductor device in response to the test signals, and providing a corresponding electrical signal indicative of the semiconductor device's response to the test signals; collection electronics receiving the electrical signal from said photosensor and providing an output signal; an analysis system receiving said output signal over a specified period of time and generating modulation mapping corresponding to the selected area of the microchip.