发明授权
US07871873B2 Method of forming fin structures using a sacrificial etch stop layer on bulk semiconductor material
有权
在体半导体材料上使用牺牲蚀刻停止层形成翅片结构的方法
- 专利标题: Method of forming fin structures using a sacrificial etch stop layer on bulk semiconductor material
- 专利标题(中): 在体半导体材料上使用牺牲蚀刻停止层形成翅片结构的方法
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申请号: US12413174申请日: 2009-03-27
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公开(公告)号: US07871873B2公开(公告)日: 2011-01-18
- 发明人: Witold Maszara , Ming-Ren Lin , Jin Cho , Zoran Krivokapic
- 申请人: Witold Maszara , Ming-Ren Lin , Jin Cho , Zoran Krivokapic
- 申请人地址: KY Grand Cayman
- 专利权人: GLOBAL FOUNDRIES Inc.
- 当前专利权人: GLOBAL FOUNDRIES Inc.
- 当前专利权人地址: KY Grand Cayman
- 代理机构: Ingrassia Fisher & Lorenz, P.C.
- 主分类号: H01L21/00
- IPC分类号: H01L21/00 ; H01L21/84 ; H01L21/336
摘要:
A method of manufacturing semiconductor fins for a semiconductor device may begin by providing a bulk semiconductor substrate. The method continues by growing a layer of first epitaxial semiconductor material on the bulk semiconductor substrate, and by growing a layer of second epitaxial semiconductor material on the layer of first epitaxial semiconductor material. The method then creates a fin pattern mask on the layer of second epitaxial semiconductor material. The fin pattern mask has features corresponding to a plurality of fins. Next, the method anisotropically etches the layer of second epitaxial semiconductor material, using the fin pattern mask as an etch mask, and using the layer of first epitaxial semiconductor material as an etch stop layer. This etching step results in a plurality of fins formed from the layer of second epitaxial semiconductor material.
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