Invention Grant
- Patent Title: Exposure aligning method and exposure apparatus
- Patent Title (中): 曝光对准方法和曝光装置
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Application No.: US12453603Application Date: 2009-05-15
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Publication No.: US08088539B2Publication Date: 2012-01-03
- Inventor: Eiichirou Yamanaka
- Applicant: Eiichirou Yamanaka
- Applicant Address: JP Kawasaki-shi, Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kawasaki-shi, Kanagawa
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2008-132930 20080521
- Main IPC: G03F9/00
- IPC: G03F9/00

Abstract:
In an exposure aligning method, a first shift amount indicating a shift amount of a lower layer pattern of an exposure target substrate from an origin point position is determined and a second shift amount indicating a shift amount of the lower layer pattern in at lease one past lot which has been processed before said exposure target substrate is processed, from the origin point position is determined. A third shift amount indicating a difference between the first shift amount and the second shift amount is calculated and a first correction value is determined based on the third shift amount. An exposure position of an exposure target pattern is adjusted based on the first correction value.
Public/Granted literature
- US20090291374A1 Exposure aligning method and exposure apparatus Public/Granted day:2009-11-26
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