发明名称 Semiconductor device and alignment apparatus and alignment method for same
摘要 In a semiconductor device having first alignment marks formed on a first layer and second alignment marks formed on a second layer, the first alignment marks and second alignment marks are disposed so as to be approximately as close to each other as a diffraction grating distance X.
申请公布号 US6271919(B1) 申请公布日期 2001.08.07
申请号 US19990285024 申请日期 1999.04.01
申请人 NEC CORPORATION 发明人 MATSUURA SEIJI
分类号 G01B11/00;G03F9/00;H01L21/027;H01L21/68;(IPC1-7):G01B11/00 主分类号 G01B11/00
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