发明名称 DEFECT CORRECTING METHOD FOR PHOTOMASK
摘要 PURPOSE:To certainly correct the defect of a photomask by selectively irradiating defective areas with energy beams after allowing the main face of the photomask to absorb gas for CVD for a recessed defect of a transparent film, and after allowing the main face of the photomask to absorb gas for etching for a projecting defect. CONSTITUTION:A defective area 4 is selectively irradiated with energy beams EB, and a correcting film 6 is accumulated on the defective area 4, after allowing the main face of a photomask 1 to absorb gas G for CVD. And also, when the defective is a projecting defective 7, the defective area 7 is selectively irradiated with the energy beams EB, and the defective area 7 is operated for etching, after allowing the main face of the photomask 1 to absorb the gas for etching. Thus, the defect of a transparent film 3 of the photomask 1 for phase shift can be accurately corrected.
申请公布号 JPH04125642(A) 申请公布日期 1992.04.27
申请号 JP19900248014 申请日期 1990.09.18
申请人 HITACHI LTD 发明人 KONO TOSHIHIKO;MIZUKOSHI KATSURO
分类号 G03F1/72;G03F1/74;H01L21/027 主分类号 G03F1/72
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