发明授权
- 专利标题: Inverted phase-shifted reticle
- 专利标题(中): 反相相位标线片
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申请号: US933400申请日: 1992-08-21
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公开(公告)号: US5302477A公开(公告)日: 1994-04-12
- 发明人: Giang T. Dao , Ruben A. Rodriguez , Harry H. Fujimoto
- 申请人: Giang T. Dao , Ruben A. Rodriguez , Harry H. Fujimoto
- 申请人地址: CA Santa Clara
- 专利权人: Intel Corporation
- 当前专利权人: Intel Corporation
- 当前专利权人地址: CA Santa Clara
- 主分类号: G03F1/29
- IPC分类号: G03F1/29 ; G03F1/30 ; G03F7/20 ; G03F9/00
摘要:
A phase-shifted reticle with patterns proximate each other having inverted phases for the features and phase-shifting elements, and methods of fabricating the reticle, are disclosed. In a preferred embodiment, the inverted reticle is used to form an array of closely spaced contact or via openings. For a first pattern on the reticle, the feature will be the 0.degree. phase and the phase-shifting rim surrounding that feature will be the 180.degree. phase. All patterns surrounding the first pattern have phase-shifting rims of the 0.degree. phase and features of the 180.degree. phase. In this way, each pattern can form below conventional resolution features in the resist. Additionally, there will not be exposure of the regions between the closely spaced features since radiation transmitted through the closely spaced phase-shifting rims of the two patterns is 180.degree. out of phase.
公开/授权文献
- USPP11084P Sinningia plant named `Glo White` 公开/授权日:1999-10-12
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