Patent ID: 7817860
Filing Date: 2010-10-19
Classification: G06T

Abstract:
1. An apparatus for measuring a dimension using electron rays comprising: imaging means for imaging a surface of a sample material by radiating and scanning electron rays focused on the sample material and detecting secondary electrons or reflected electrons generated from the sample material; a measurement recipe setup unit for storing a measurement recipe used for the imaging means; sample registration waveform storage means for storing a partial waveform of a sample signal waveform as a sample registration waveform, in which the sample signal waveform is formed by a signal waveform formation means based on a sample pattern signal obtained by imaging a sample pattern formed on a sample material using the imaging means based on the measurement recipe set by the measurement recipe setup unit; waveform combination means for combining a measurement target signal waveform formed by a signal waveform formed by a signal waveform formation means with the sample registration waveform stored in the sample registration waveform storage means, in which the measurement target signal waveform is formed based on a dimension measurement target signal obtained by imaging a dimension measurement target pattern formed on a dimension measurement target sample by using the imaging means based on the measurement recipe set by the measurement recipe setup unit; and dimension calculation means for calculating a dimension of the dimension measurement target pattern based on the waveform combination result from the waveform combination means.