Invention Grant
- Patent Title: Overlay metrology target
- Patent Title (中): 覆盖度量目标
-
Application No.: US12717430Application Date: 2010-03-04
-
Publication No.: US08345243B2Publication Date: 2013-01-01
- Inventor: Mark Ghinovker , Vladimir Levinski
- Applicant: Mark Ghinovker , Vladimir Levinski
- Applicant Address: US CA Milpitas
- Assignee: KLA-Tencor Corporation
- Current Assignee: KLA-Tencor Corporation
- Current Assignee Address: US CA Milpitas
- Agency: Luedeka Neely Group, P.C.
- Main IPC: G01B11/00
- IPC: G01B11/00 ; H01L21/76 ; H01L23/544 ; G06K9/00

Abstract:
In one embodiment, a metrology target for determining a relative shift between two or more successive layers of a substrate may comprise; an first structure on a first layer of a substrate and an second structure on a successive layer to the first layer of the substrate arranged to determine relative shifts in alignment in both the x and y directions of the substrate by analyzing the first structure and second structure overlay.
Public/Granted literature
- US20100155968A1 Overlay Metrology Target Public/Granted day:2010-06-24
Information query