Patent ID: 7518109
Filing Date: 2009-04-14
Classification: G01B,G01N,H01J

Abstract:
1. A method of measuring a thin film sample characterized in including: a step of detecting a charged particle generated by irradiating a charged particle beam to a region including a film thickness measuring region and a reference region of a standard thin film sample; a step of calculating a calculated value of the standard thin film sample constituted by an amount of the charged particle detected at the film thickness measuring region and an amount of the charged particle detected at the reference region; a step of forming a calibration data showing a relationship between the calculated value and the film thickness of the standard thin film sample; a step of detecting a charged particle generated by irradiating a charged particle beam to a region including a film thickness measuring region and a reference region of a desired thin film sample; a step of calculating a calculated value of the thin film sample constituted by an amount of the charged particle detected at the film thickness measuring region and an amount of the charged particle detected at the reference region; and a step of calculating the film thickness of the film thickness measuring region of the thin film sample from the calibration data and the calculated value of the thin film sample.