发明申请
US20070228010A1 Systems and methods for removing/containing wafer edge defects post liner deposition
审中-公开
用于去除/包含衬片沉积后的晶片边缘缺陷的系统和方法
- 专利标题: Systems and methods for removing/containing wafer edge defects post liner deposition
- 专利标题(中): 用于去除/包含衬片沉积后的晶片边缘缺陷的系统和方法
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申请号: US11395799申请日: 2006-03-31
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公开(公告)号: US20070228010A1公开(公告)日: 2007-10-04
- 发明人: James Martin , Kelly Taylor , Changfeng Xia , Donald Culp , David Frystak
- 申请人: James Martin , Kelly Taylor , Changfeng Xia , Donald Culp , David Frystak
- 专利权人: Texas Instruments Incorporated
- 当前专利权人: Texas Instruments Incorporated
- 主分类号: B44C1/22
- IPC分类号: B44C1/22 ; B32B1/08 ; H01L21/306
摘要:
A method removes and/or contains edge residue. A wafer comprised of a semiconductor material having a top surface, a bottom surface and an edge surface is provided. The bottom surface and the top surface are substantially planar and the edge surface is non-planar. Residue can be located on the edge surface, which can dislodge if not addressed and damage devices formed on the wafer. One or more devices can be at least partially formed on the top surface. A pre-metal dielectric liner is formed over the top surface of the wafer and covering at least a portion of the residue. An edge portion of the liner is etched or otherwise removed to expose the portion of the residue. Thereafter, a pre-metal dielectric layer is formed over the top surface of the wafer and the pre-metal dielectric liner. During formation of the pre-metal dielectric layer, the edge residue is removed and/or contained.
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