Patent ID: 9671223
Date: 2017-06-06
CPC Classifications: G01B,G01Q,H01J

Claim:
1. A pattern dimension measurement method comprising the steps of: scanning a dimension measurement objective sample by using a first electron microscope device representing one of a plurality of electron microscope devices mutually coupled through a network so as to acquire an image of a pattern of said dimension measurement objective sample; comparing a real signal waveform of said image of said pattern of said dimension measurement objective sample with a simulation waveform library prepared through simulation by using device characteristic parameters of said first electron microscope device among device characteristic parameters of said plurality of electron microscope devices which are stored in advance so as to obtain a presumed cross-sectional shape of the pattern of said dimension measurement objective sample; generating a plurality of simulated signal waveforms corresponding to each of the plurality of electron microscope devices exclusive of said first electron microscope by using the obtained presumed cross-sectional shape of the dimension measurement objective sample and device characteristic parameters of each of the plurality of electron microscope devices exclusive of said first electron microscope among said plurality of electron microscope devices; calculating machine differences among each of the plurality of electron microscope devices inclusive of said first electron microscope by using a dimension of the pattern of said dimension measurement objective sample calculated on the basis of said real signal waveform and a dimension of the pattern of said dimension measurement objective sample calculated on the basis of each of the plurality of simulated signal waveforms so as to store, as machine difference information, the calculated machine differences among each of the plurality of electron microscope devices in a machine difference database; and correcting a dimension measurement result of the pattern of said dimension measurement objective sample obtained through the use of at least one of said plurality of electron microscope devices by using the machine difference information stored in said machine difference database so as to measure a dimension of the pattern of said dimension measurement objective sample.