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亚分辨率辅助图形对28纳米密集线条光刻成像的影响
Sub-Resolution-Assist-Feature placement effect to 28nm dense line patterns
【摘要】 亚分辨率辅助图形(Sub-Resolution-Assist-Feature,SRAF)是光刻工艺图形增强技术(Resolution Enhancement Technology,RET)中广泛应用的一种方法。本文设计实验在密集图形(线宽/距离比约1:1)外侧放置不同的SRAF,研究了SRAF对于密集图形内部线条成像的影响,通过实验数据总结和理论分析,提出了最佳的SRAF放置位置。此外,本文还设计了一种与设计图形线宽一样大小的SRAF,并比较了其与传统尺寸SRAF对密集图形内侧线条成像的影响。
【Abstract】 Sub-Resolution-Assist-Feature(SRAF)plays more and more important role in the Resolution Enhancement Technology(RET). In this paper, SRAF experiments were carried out to a 28 nm dense line pattern, the best SRAF placement location was recommended according to experiment and optical intensity analysis. Furthermore,SRAF with same width of design pattern was also studied.
【关键词】 亚分辨率辅助图形;
SRAF;
光学邻近效应修正;
OPC;
分辨率;
【Key words】 Sub-Resolution-Assist-Feature; SRAF; OPC; Optical Proximity Correction; Resolution;
【Key words】 Sub-Resolution-Assist-Feature; SRAF; OPC; Optical Proximity Correction; Resolution;
- 【文献出处】 中国集成电路 ,China Integrated Circuit , 编辑部邮箱 ,2016年05期
- 【分类号】TN305.7
- 【被引频次】2
- 【下载频次】143