Measuring apparatus and method for measuring a surface...

Details Measuring apparatus and method for measuring a surface... Measuring apparatus and method for measuring a surface...

2008-07-31

2010-10-12

Natalini, Jeff (Department: 2831)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S765010

Reexamination Certificate

active

07812621

ABSTRACT:
A measuring unit applies a dc voltage causing an inversion layer to be formed on an interface between a semiconductor substrate and an insulating film to the semiconductor substrate while changing a change speed of a level of the dc voltage, and measures a current flowing through the insulating film. An arithmetic unit obtains a straight line showing a relationship between the current flowing through the insulating film and the change speed of the dc voltage on the basis of a relationship between the current measured by the measuring unit and the dc voltage, and calculates a slope of the obtained straight line as surface capacitance of the insulating film. The arithmetic unit calculates permittivity of the insulating film on the basis of the calculated surface capacitance, an area of contact between a probe and the insulating film and a thickness of the insulating film.

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International Search Report for PCT/JP2009/002067 dated Oct. 28, 2008.

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