发明授权
US06207568B1 Ionized metal plasma (IMP) method for forming (111) oriented aluminum containing conductor layer
有权
用于形成(111)取向的含铝导体层的电离金属等离子体(IMP)方法
- 专利标题: Ionized metal plasma (IMP) method for forming (111) oriented aluminum containing conductor layer
- 专利标题(中): 用于形成(111)取向的含铝导体层的电离金属等离子体(IMP)方法
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申请号: US09200554申请日: 1998-11-27
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公开(公告)号: US06207568B1公开(公告)日: 2001-03-27
- 发明人: Chung-Shi Liu , Shau-Lin Shue , Chen-Hua Yu
- 申请人: Chung-Shi Liu , Shau-Lin Shue , Chen-Hua Yu
- 主分类号: H01L2144
- IPC分类号: H01L2144
摘要:
A method for forming an aluminum containing conductor layer. There is first provided a substrate. There is then formed over the substrate a titanium layer employing an ionized metal plasma bias sputtering method. Finally there is then formed upon the titanium layer an aluminum containing conductor layer. By employing the ionized metal plasma bias sputtering method for forming the titanium layer, the aluminum containing conductor layer is formed with an enhanced (111) crystallographic orientation. The method is particularly useful for forming aluminum containing conductor layers with enhanced electromigration resistance, even under circumstances where there is formed interposed between a titanium layer and an aluminum containing conductor layer a titanium nitride layer.
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