Invention Grant
- Patent Title: Self-calibrated alignment and overlay target and measurement
- Patent Title (中): 自校准对准和覆盖目标和测量
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Application No.: US13211594Application Date: 2011-08-17
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Publication No.: US08638438B2Publication Date: 2014-01-28
- Inventor: Christopher P. Ausschnitt , Nelson Felix
- Applicant: Christopher P. Ausschnitt , Nelson Felix
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Yuanmin Cai
- Main IPC: G01B11/00
- IPC: G01B11/00

Abstract:
An alignment feature disposed on a substrate, the alignment feature including a first lithographic pattern having a first aggregate geometric center point defined by a first sub-pattern comprising alignment marks having a first sub-pattern geometric center point arranged a distance (d0) in a first direction from the first aggregate geometric center point, and a second sub-pattern comprising alignment marks having a second sub-pattern geometric center point arranged the distance d0 in a reciprocal direction of the first direction from the first aggregate geometric center point.
Public/Granted literature
- US20130044320A1 Self-Calibrated Alignment and Overlay Target and Measurement Public/Granted day:2013-02-21
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