发明名称 Mura defect inspection mask, apparatus and method of inspecting the mura defect, and method of producing a photomask
摘要 Plural repetitive patterns 61 are formed on a transparent substrate 62 in the unit of a chip 65. Each of the repetitive patterns has plural pseudo mura defects 66 to which intensities of mura defects occurring in a predetermined repetitive pattern are allocated with being stepwise changed, for respective kinds of the mura defects. The mura defects are a CD Mura based on an abnormality in critical dimension of unit patterns 63 in the repetitive patterns, a Pitch Mura based on an abnormality in interval of the repetitive patterns, a Butting Mura based on a positional displacement of the repetitive patterns, and a Defect mura based on a pattern defect of unit patterns in the repetitive patterns.
申请公布号 US7538867(B2) 申请公布日期 2009.05.26
申请号 US20050139970 申请日期 2005.05.31
申请人 HOYA CORPORATION 发明人 MURAI MAKOTO
分类号 G01N21/00;G01B11/30;G01M11/00;G01N21/88;G01N21/956;G03F1/84;H01L21/027 主分类号 G01N21/00
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