Invention Grant
- Patent Title: Ground shield with reentrant feature
- Patent Title (中): 具有可重入功能的防护罩
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Application No.: US11426775Application Date: 2006-06-27
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Publication No.: US07718045B2Publication Date: 2010-05-18
- Inventor: Jennifer W. Tiller , Anantha Subramani , Michael S. Cox , Keith A. Miller
- Applicant: Jennifer W. Tiller , Anantha Subramani , Michael S. Cox , Keith A. Miller
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Patterson & Sheridan, LLP
- Main IPC: C23C14/34
- IPC: C23C14/34

Abstract:
The invention generally provides a ground shield for use in a physical vapor deposition (PVD) chamber. In one embodiment, a ground shield includes a generally cylindrical body comprising an outer wall, an inner upper wall, an inner lower wall having a diameter less than a diameter of the inner upper wall and a reentrant feature coupling the upper and inner lower walls. The reentrant feature advantageously prevents arching between the shield and target, which promotes greater process uniformity and repeatability along with longer chamber component service life.
Public/Granted literature
- US20070295602A1 GROUND SHIELD WITH REENTRANT FEATURE Public/Granted day:2007-12-27
Information query
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