Patent ID: 6587201
Filing Date: 2003-07-01
Classification: G01B

Abstract:
A position detecting method that obtains positional information of a plurality of regions formed on a substrate, comprising the steps of:selecting a predetermined number of sample regions from the plurality of regions on the substrate; a first imaging step of imaging a mark having a predetermined shape that is arranged corresponding to a first region among the sample regions by using an imaging device, and then, based on a result of the imaging, re-imaging the mark by again using the imaging device, and obtaining positional information of the first region based on a result of the re-imaging; a second imaging step of imaging a mark having a shape that is approximately the same as the predetermined shape and that is arranged corresponding to a second region among the sample regions by using the imaging device, and obtaining positional information of the second region based on a result of the imaging by the imaging device without performing a re-imaging step; and performing a statistical calculation by using the positional information that is obtained, so as to obtain respective positional information of the plurality of regions formed on the substrate.