Patent ID: 9000365
Filing Date: 2015-04-07
Classification: G01B,H01L

Abstract:
1. A pattern measuring apparatus for measuring a pattern of a sample, in which plural patterns are arranged, by the use of a signal obtained based on scanning of a charged particle beam relative to the sample, said pattern measuring apparatus comprising: a decision device for extracting, regarding one end side of the pattern in which the plural patterns are arranged and other end side of the pattern, from a waveform signal obtained based on the scanning of the charged particle beam, at least one of distances between peak points of peaks of the waveform signal and rising points of the peaks, peak heights of a differential waveform of the waveform signal and distances between rising points of the differential waveform; for comparing at least one of the distances between the peak points of the peak of the waveform signal and the rising points of the peak, the peak heights, and the distances between rising points of the differential waveform; and for judging, as a core gap, a gap located on the one side or the other side where the waveform signal has a smaller distance of the distances between peak points of peaks of the waveform signal and rising points of the peaks, a gap located on the one end side or the other end side where the differential waveform has a higher peak of the peak heights and/or a gap located on the one end side or other side where the differential waveform has a smaller distance of the distances between the rising points of the peaks of the differential waveform.