发明申请
- 专利标题: BEVEL ETCHER AND THE RELATED METHOD OF FLATTENING A WAFER
- 专利标题(中): 水平蚀刻器和相关的平铺方法
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申请号: US12164109申请日: 2008-06-30
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公开(公告)号: US20090325382A1公开(公告)日: 2009-12-31
- 发明人: Tai-Heng Yu , Chih-Yueh Li
- 申请人: Tai-Heng Yu , Chih-Yueh Li
- 主分类号: H01L21/306
- IPC分类号: H01L21/306 ; H01L21/308
摘要:
The wafer bevel etching apparatus of the present invention includes a wafer-protecting mask to cover parts of a wafer. A central region and a wafer bevel region surrounding the central region are defined on the wafer. The wafer-protecting mask includes a center sheltering region and at least one wafer bevel sheltering region. The center sheltering region can completely shelter the central region of the wafer, and the wafer bevel sheltering region extends from the outside edge of the center sheltering region, shelters parts of the wafer bevel region, and exposes the other parts of the wafer bevel region.
公开/授权文献
- US09136105B2 Bevel etcher 公开/授权日:2015-09-15
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