发明授权
- 专利标题: Polished hard mask process for conductor layer patterning
- 专利标题(中): 用于导体层图案化的抛光硬掩模工艺
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申请号: US09706498申请日: 2000-11-03
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公开(公告)号: US06544885B1公开(公告)日: 2003-04-08
- 发明人: Khanh B. Nguyen , Harry J. Levinson , Christopher F. Lyons , Scott A. Bell , Fei Wang , Chih Yuh Yang
- 申请人: Khanh B. Nguyen , Harry J. Levinson , Christopher F. Lyons , Scott A. Bell , Fei Wang , Chih Yuh Yang
- 主分类号: H01L2358
- IPC分类号: H01L2358
摘要:
A method of forming a conductor pattern on a base with uneven topography includes placing conductor material on the base, placing a hard mask material on the conductor material, planarizing an exposed surface of the hard mask material, and placing a layer of resist on the hard mask material. The resist is patterned and the patterned resist is used in selectively etching the hard mask material, with the hard mask material used in selectively etching the underlying conductor material. By planarizing the hard mask material prior to placing a layer of resist thereupon, uniformity of the resist coating is enhanced and depth of focus problems in exposing the resist are reduced.
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