Patent ID: 6795456
Filing Date: 2004-09-21
Classification: B23K,G01N,G01R,H01L,H01S

Abstract:
A method of performing failure analysis upon a multi-layer semiconductor device, comprising the steps of:exciting a gain medium containing molecular fluorine and disposed in a resonant cavity to generate an output beam having a first component with a wavelength around 157 nm, and having a second component with a wavelength around 718 nm; directing the first component of the output beam onto a multi-layer semiconductor device to selectively etch away a first material therefrom; directing the second component of the output beam onto the multi-layer semiconductor device to treat a second material of the multi-layer device without etching the first material; shaping the beam into a pattern using a mask; imaging the shaped beam onto the semiconductor device; and viewing the etching of the first material using a camera aligned co-linearly with a final trajectory of the output beam.