Patent ID: 7375537
Filing Date: 2008-05-20
Classification: G01B,G01N

Abstract:
1. A relative-dielectric-constant measuring method for measuring a relative dielectric constant of an insulation film formed on a surface of a substrate, comprising the steps of: (a) measuring a film thickness of said insulation film without contact; (b) measuring a gap between said insulation film and an electrode spaced as opposed to said insulation film; (c) measuring an accumulation capacitance between said substrate and said electrode; and (d) calculating the relative dielectric constant of said insulation film by assigning values of said film thickness measured in said step (a), said gap measured in said step (b), and said accumulation capacitance measured in said step (c) to an equation indicating a relation of said accumulation capacitance between said substrate and said electrode with a resultant capacitance of an insulation capacitance of insulation film and a gap capacitance of air space.