MEASUREMENT OF THE POSITION OF A RADIATION BEAM SPOT IN LITHOGRAPHY

    公开(公告)号:SG193240A1

    公开(公告)日:2013-10-30

    申请号:SG2013065149

    申请日:2012-02-22

    Abstract: A radiation spot measurement system for a lithographic apparatus, the system having a target (40) onto which a radiation system of the lithographic apparatus may project spots of radiation for a measurement process, the target having a measurement target (42). The system further includes a radiation detector (41) to detect radiation from one of the spots, and a controller (46) to receive information from the radiation detector and to determine the position of the spot of radiation relative to an intended position of the spot of radiation.

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