Invention Grant
- Patent Title: Non destructive selective deposition removal of non-metallic deposits from aluminum containing substrates
- Patent Title (中): 从含铝基材中非金属沉积物的非破坏性选择性沉积去除
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Application No.: US12709369Application Date: 2010-02-19
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Publication No.: US08398779B2Publication Date: 2013-03-19
- Inventor: Liyuan Bao , Anbei Jiang , Sio On Lo , Yukari Nishimura , Joseph F. Sommers , Samantha S. H. Tan
- Applicant: Liyuan Bao , Anbei Jiang , Sio On Lo , Yukari Nishimura , Joseph F. Sommers , Samantha S. H. Tan
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: B08B3/08
- IPC: B08B3/08

Abstract:
Non-metallic deposits are selectively removed from aluminum containing substrates such as aluminum faceplates using a selective deposition removal (SDR) solution. The SDR solution does not substantially etch the faceplate holes, thereby preserving the hole diameter integrity and increasing the number of times the faceplate may be cleaned or refurbished while remaining within processing hole diameter tolerances. In an embodiment, the SDR solution comprises, in wt % of the solution, 15.5%+/−2% HF or buffered HF acid, 3.8%+/−0.5% NH4F pH buffer, 59.7%+/−5% ethylene glycol, and the balance H2O.
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