Invention Grant
- Patent Title: Exposure apparatus, exposure method, and device manufacturing method
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Application No.: US14852658Application Date: 2015-09-14
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Publication No.: US09726981B2Publication Date: 2017-08-08
- Inventor: Ryo Sasaki
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2014-202122 20140930
- Main IPC: G03B27/54
- IPC: G03B27/54 ; G03B27/42 ; G03F7/20

Abstract:
An exposure apparatus includes: a projection optical system; an adjusting unit configured to adjust imaging characteristics of the projection optical system; and a controller configured to divide the plurality of shot regions into groups based on data of a shift in the pattern of each shot region and an order of the exposure, determine setting amounts of the imaging characteristics for each group, and control the adjusting unit to set the imaging characteristics to the setting amounts for each group. The setting amount is common to a plurality of shot regions in the group and varies among the groups. The controller performs the division such that the shot regions belonging to the same group have a sequential exposure order and all values of the shift in the shot regions belonging to the same group fall within a predetermined range.
Public/Granted literature
- US20160091800A1 EXPOSURE APPARATUS, EXPOSURE METHOD, AND DEVICE MANUFACTURING METHOD Public/Granted day:2016-03-31
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