Patent ID: 7400401
Filing Date: 2008-07-15
Classification: G01N

Abstract:
1. A system for measuring an overall dielectric constant of a low-k dielectric film formed over a reflective layer formed over a semiconductor substrate, said system comprising: an ellipsometer that measures an electronic component of said overall dielectric constant of said low-k dielectric film and produces a measured electronic component; an infrared spectrometer that measures an ionic component of said overall dielectric constant of said low-k dielectric film and produces a measured ionic component; a microwave spectrometer that measures said overall dielectric constant of said low-k dielectric film and produces a measured overall dielectric constant by measuring impedance and converting said impedance to said overall dielectric constant; and means for deriving a dipole component of said overall dielectric constant using said measured electronic component, said measured ionic component and said measured overall dielectric constant, wherein a first spectrometer tool includes said infrared spectrometer and said microwave spectrometer, and said ellipsometer and said first spectrometer tool are each non-contact measuring tools.