发明名称
摘要 PURPOSE:To secure an accurate protection for the alignment mark area even in case the positive sensitizer is used, by using the film of such wavelength characteristics that the light of the sensitive wavelength region is cut off but the light of the observation wavelength region is allowed to pass.
申请公布号 JPS6148255(B2) 申请公布日期 1986.10.23
申请号 JP19770005504 申请日期 1977.01.21
申请人 CANON KK 发明人 SUZUKI AKYOSHI;YOSHINARI HIDEKI
分类号 H01L21/30;H01L21/027;H01L21/302 主分类号 H01L21/30
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