发明授权
- 专利标题: Organic anti-reflective polymer and method for manufacturing thereof
- 专利标题(中): 有机抗反射聚合物及其制造方法
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申请号: US10095852申请日: 2002-03-11
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公开(公告)号: US06489423B2公开(公告)日: 2002-12-03
- 发明人: Min-ho Jung , Sung-eun Hong , Ki-ho Baik
- 申请人: Min-ho Jung , Sung-eun Hong , Ki-ho Baik
- 优先权: KR99-23382 19990622
- 主分类号: C08F22012
- IPC分类号: C08F22012
摘要:
Polymers are disclosed having the following formula 1 or 2: Polymers of the present invention can be used as an ARC material useful for submicrolithography processes using 248 nm KrF, 193 nm ArF and 157 nm F2 lasers. The polymers contain a chromophore substituent that exhibits sufficient absorbance at the wavelengths useful for the submicrolithography process. The ARC prevents back reflection of light from lower layers and the alteration of the CD by diffracted and reflected light from the lower layers. The ARC also eliminates standing waves and reflective notching due to the optical properties of lower layers on the wafer and to changes in the thickness of the photosensitive film applied thereon, thereby resulting in the stable formation of ultrafine patterns suitable for 64 M, 256 M, 1 G, 4 G and 16 G DRAMs and a great improvement in the production yield.
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