Patent ID: 8999627
Filing Date: 2015-04-07
Classification: G03F,G06F,H01J,H01L

Abstract:
1. A method of writing resist-coated substrates using multiple charged particle beams, comprising the actions of: writing multiple cut features specified by a design layout database onto at least one substrate; imaging said features, said features being targeted in at least partial dependence on the design layout database; automatically identifying one or more defects in ones of said features in at least partial dependence on said imaging and the design layout database; automatically modifying the design layout database, in at least partial dependence on said identifying; and repeating at least said writing using said modified design layout database; wherein said writing and said imaging use multiple charged particle beams produced by multiple columns that are substantially the same, different ones of said beams targeting different portions of the substrate; and wherein the stages on which the substrate is mounted during said writing and said imaging are substantially the same.