发明申请
- 专利标题: METHOD AND APPARATUS OF AN INSPECTION SYSTEM USING AN ELECTRON BEAM
- 专利标题(中): 使用电子束检测系统的方法和装置
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申请号: US12211343申请日: 2008-09-16
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公开(公告)号: US20090057556A1公开(公告)日: 2009-03-05
- 发明人: Yuko Iwabuchi , Hideo Todokoro , Hiroyoshi Mori , Mitsugu Sato , Yasutsugu Usami , Mikio Ichihashi , Satoru Fukuhara , Hiroyuki Shinada , Yutaka Kaneko , Katsuya Sugiyama , Atsuko Takafuji , Hiroshi Toyama
- 申请人: Yuko Iwabuchi , Hideo Todokoro , Hiroyoshi Mori , Mitsugu Sato , Yasutsugu Usami , Mikio Ichihashi , Satoru Fukuhara , Hiroyuki Shinada , Yutaka Kaneko , Katsuya Sugiyama , Atsuko Takafuji , Hiroshi Toyama
- 优先权: JP9-212908 19970807
- 主分类号: G01N23/00
- IPC分类号: G01N23/00
摘要:
Problems encountered in the conventional inspection method and the conventional apparatus adopting the method are solved by the present invention using an electron beam by providing a novel inspection method and an inspection apparatus adopting the novel method which are capable of increasing the speed to scan a specimen such as a semiconductor wafer.The inspection novel method provided by the present invention comprises the steps of: generating an electron beam; converging the generated electron beam on a specimen by using an objective lens; scanning the specimen by using the converged electron beam; continuously moving the specimen during scanning; detecting charged particles emanating from the specimen at a location between the specimen and the objective lens and converting the detected charged particles into an electrical signal; storing picture information conveyed by the electrical signal; comparing a picture with another by using the stored picture information; and detecting a defect of the specimen.
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