- 专利标题: Exposure method, exposure apparatus, and device manufacturing method
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申请号: US14462668申请日: 2014-08-19
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公开(公告)号: US09477155B2公开(公告)日: 2016-10-25
- 发明人: Yuichi Shibazaki
- 申请人: NIKON CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: NIKON CORPORATION
- 当前专利权人: NIKON CORPORATION
- 当前专利权人地址: JP Tokyo
- 代理机构: Oliff PLC
- 主分类号: G01B11/00
- IPC分类号: G01B11/00 ; G03F7/20 ; H01L21/68 ; G03F9/00 ; G01B11/27
摘要:
Within area where of four heads installed on a wafer stage, heads included in the first head group and the second head group to which three heads each belong that include one head different from each other face the corresponding areas on a scale plate, the wafer stage is driven based on positional information which is obtained using the first head group, as well as obtain the displacement (displacement of position, rotation, and scaling) between the first and second reference coordinate systems corresponding to the first and second head groups using the positional information obtained using the first and second head groups. By using the results and correcting measurement results obtained using the second head group, the displacement between the first and second reference coordinate systems is calibrated, which allows the measurement errors that come with the displacement between areas on scale plates where each of the four heads face.
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