发明申请
- 专利标题: Method for determining suitability of a resist in semiconductor wafer fabrication
- 专利标题(中): 确定半导体晶片制造中抗蚀剂适用性的方法
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申请号: US11825448申请日: 2007-07-06
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公开(公告)号: US20090011524A1公开(公告)日: 2009-01-08
- 发明人: Thomas Wallow , Bruno M. LaFontaine
- 申请人: Thomas Wallow , Bruno M. LaFontaine
- 专利权人: Advanced Micro Devices, Inc.
- 当前专利权人: Advanced Micro Devices, Inc.
- 主分类号: H01L21/66
- IPC分类号: H01L21/66 ; H01L21/02
摘要:
In one disclosed embodiment, the present method for determining resist suitability for semiconductor wafer fabrication comprises forming a layer of resist over a semiconductor wafer, exposing the layer of resist to patterned radiation, and determining resist suitability by using a scatterometry process prior to developing a lithographic pattern on the layer of resist. In one embodiment, the semiconductor wafer is heated in a post exposure bake process after scatterometry is performed. In one embodiment, the patterned radiation is provided by an extreme ultraviolet (EUV) light source in a lithographic process. In other embodiments, patterned radiation is provided by an electron beam, or ion beam, for example. In one embodiment, the present method determines out-gassing of a layer of resist during exposure to patterned radiation.
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