Invention Grant
US08426312B2 Method of reducing contamination by providing an etch stop layer at the substrate edge
有权
通过在衬底边缘处提供蚀刻停止层来减少污染的方法
- Patent Title: Method of reducing contamination by providing an etch stop layer at the substrate edge
- Patent Title (中): 通过在衬底边缘处提供蚀刻停止层来减少污染的方法
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Application No.: US11531793Application Date: 2006-09-14
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Publication No.: US08426312B2Publication Date: 2013-04-23
- Inventor: Ralf Richter , Tobias Letz , Holger Schuehrer
- Applicant: Ralf Richter , Tobias Letz , Holger Schuehrer
- Applicant Address: KY Grand Cayman
- Assignee: Globalfoundries Inc.
- Current Assignee: Globalfoundries Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Williams, Morgan & Amerson, P.C.
- Priority: DE102005063089 20051230
- Main IPC: H01L21/461
- IPC: H01L21/461

Abstract:
By providing an etch stop layer selectively at the bevel, at least one additional wet chemical bevel etch process may be performed prior to or during the formation of a metallization layer without affecting the substrate material. Hence, the dielectric material, especially the low-k dielectric material, may be reliably removed from the bevel prior to the formation of any barrier and metal layers. The etch stop layer may be formed at an early manufacturing stage so that a bevel etch process may be performed at any desired stage of the formation of circuit elements.
Public/Granted literature
- US20070155133A1 METHOD OF REDUCING CONTAMINATION BY PROVIDING AN ETCH STOP LAYER AT THE SUBSTRATE EDGE Public/Granted day:2007-07-05
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