Invention Grant
- Patent Title: Exposure apparatus
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Application No.: US12582979Application Date: 2009-10-21
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Publication No.: US08345244B2Publication Date: 2013-01-01
- Inventor: Shinichiro Koga
- Applicant: Shinichiro Koga
- Applicant Address: JP
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2008-271783 20081022
- Main IPC: G01B11/00
- IPC: G01B11/00 ; G01N21/86 ; G03B27/32 ; G03F9/00

Abstract:
An exposure apparatus includes a controller configured to calculate a position of an alignment mark detected by a detector, to approximate a deformation of a substrate by using an approximation equation, to calculate a correction amount of each of the plurality of shots, and to control driving of a stage in exposing each shot based on a correction amount that is calculated. The approximation equation is defined as a sum of a first term representative of a deformation of the entire substrate, and at least one of a second term representative of a distortion of a shot arrangement and a third term representative of a shot shape.
Public/Granted literature
- US08384900B2 Exposure apparatus Public/Granted day:2013-02-26
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