Patent ID: 9552963
Date: 2017-01-24
CPC Classifications: B82Y,G03F,H01J

Claim:
1. A charged particle beam writing apparatus comprising: a writing mechanism including an electron lens barrel which irradiates a substrate with a charged particle beam, to write a pattern on the substrate using the charged particle beam; and at least one processor configured to: read an optically readable identifier (ID) from a substrate having an absorber film which absorbs extreme ultraviolet (EUV) light, and a multilayer film with a cap film, which reflects the EUV light below the absorber film; relate the identifier to defect position information of a particulate-generated defect that generates a phase defect occurring due to periodicity of the multilayer film becoming irregular; store in a storage device 1) the defect position information including a position of the particulate-generated defect on the substrate based on one or more reference marks, 2) defect size information indicating a size of the defect, and 3) pattern data for writing; input partial pattern data corresponding to a region including at least the defect in the pattern data, the defect position information of the defect based on the one or more reference marks, the defect size information of the defect, and examine whether a pattern layout is to be formed such that the defect is located in a region where the absorber film remains after patterning or whether said pattern layout is to be formed such that the defect is located in a region of multilayer film with the cap film, exposed by removing the absorber film; calculate, when the defect is located in the region of the multilayer film with the cap film, exposed by removing the absorber film after patterning, an offset value between a defect position of the defect based on the one or more reference marks and the region where the absorber film remains after patterning for performing correction to shift an origin of pattern coordinate based on the one or more reference marks so that the defect is located in the region where the absorber film remains after patterning, wherein the writing mechanism further writes the pattern on a position corrected by the offset value, based on the pattern data indicating where the absorber film remains after patterning.